\page Cover art by Sergey-Lesiuk

art by Simon Pape ## The Catalyst A Catalyst is someone whose connection to magic is not that of a type of magic school, or coming from a deity. Magical energy can be found anywhere. The Catalysts body innately reacts to it, letting it perceive and interact with the magic in the environment, changing its view of reality. To a Catalyst, magic is a lifestyle. ## Class Features As a Catalyst, you gain the following class features #### Hit Points ___ - **Hit Dice:** 1d8 per Catalyst level - **Hit Points at 1st Level:** 8 + your Constitution modifier - **Hit Points at Higher Levels:** 1d8 (or 5) + your Constitution modifier per Catalyst level after 1st #### Proficiencies ___ - **Armor:** Light - **Weapons:** Simple weapons - **Tools:** Alchemist’s supplies ___ - **Saving Throws:** Intelligence, Wisdom - **Skills:** Choose two from Athletics, Arcana, Investigation, Medicine, Nature, Perception and Sleight of Hand #### Equipment You start with the following equipment, in addition to the equipment granted by your background: - any two simple weapons - a short bow and 20 arrows - *(a)* scale mail (if proficient) or *(b)* leather armor - a dungeoneer's pack ``` ``` ### Catalysis As a Catalyst, you use your body to catalyze the mana around you, producing and consuming reagents to create magic effects, while your endurance helps postpone the effects of magical burnout. #### Spells Known of 1st Level and Higher You know three 1st-level spells of your choice from the Catalyst spell list. You learn an additional spell of your choice at each level. Each of these spells must be of a level equal or lower than the spell Level from the Catalyst table. For instance, when you reach 3rd level in this class, you can learn one new spell of 1st or 2nd level. Additionally, when you gain a level in this class, you can choose one of the spells you know and replace it with another spell, which also must be of a level equal or lower than the Spell Level from the Catalyst table. #### Catalyze You can use your body to catalyze the arcane power that floats in the environment and create reagents. Reagents are raw magic, which last in your body for 1 minute. Once per turn, as an action or a bonus action, you can roll a number of d10 up to your Arcane Amperage score from the Catalyst Table. Each 7, 8, 9 or 10 rolled gives you a reagent. Also if you would use your reaction to cast a spell, you can use this feature as part of the same action. You can't spend more reagents than your Spell Level from the Catalyst Table or 5, whichever is lower, in a single Spell or Catalyst feature. Everytime you spend reagents, any unspent reagent is lost. To cast one of your Catalyst spells of 1st level or higher, you must expend a number of Reagents equal to the spell level. You don't need to provide material components when casting spells in this way, unless their price are higher than 10gp. #### Arcane Endurance Each time you use your Catalyze feature, there is a chance that the reaction, or part of it, fails and applies stress to your body. You have an amount of tollerance to this stress, named Arcane Endurance. Your Arcane Endurance points are shown in the Catalyst Table. Each 1 rolled on a d10 die when you use your Catalyze feature, drains an Arcane Endurance point. Every time you use your Catalyze feature while having 0 Arcane Endurance points, if you roll at least one 1, you suffer a **mana burn**. If you use your reaction to cast any spell, and you use your Catalyze feature in the same action, every 2 on a d10 die counts as a 1 for purposes of draining Arcane Endurance points and giving mana burns. You restore your Arcane Endurance points after finishing a long rest. #### Mana Burn Each time you suffer a mana burn, your body overcharges because of the catalysis, burning its arcane circuits and making it harder to catalyze the magic around. Each mana burn reduces your Arcane Amperage score by 1. When you finish a long rest, you restore one point of Arcane Amperage lost in this way. You cannot restore any Arcane Amperage point lost in this way by other means. \page

##### The Catalyst | Level | Proficiency Bonus | Features | Spells Known | Spell Level | Arcane Amperage | Arcane Endurance | |:---:|:---:|:---|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---: | | 1st | +2 | Catalyst affinity, Catalysis | 3 | 1 | 2 | 0 | | 2nd | +2 | Synesthesia | 4 | 1 | 3 | 1 | | 3rd | +2 | Catalyst affinity feature | 5 | 2 | 4 | 2 | | 4th | +2 | Ability Score Improvement | 6 | 2 | 5 | 3 | | 5th | +3 | Synesthesia upgrade | 7 | 3 | 6 | 4 | | 6th | +3 | Catalyst affinity feature | 8 | 3 | 7 | 5 | | 7th | +3 | Mana Reuse | 9 | 4 | 8 | 6 | | 8th | +3 | Ability Score Improvement | 10 | 4 | 9 | 7 | | 9th | +4 | Synesthesia upgrade | 11 | 5 | 10 | 8 | | 10th | +4 | Catalyst affinity feature | 12 | 5 | 10 | 9 | | 11th | +4 | Crystalization (6th level) | 13 | 6 | 10 | 9 | | 12th | +4 | Ability Score Improvement | 14 | 6 | 10 | 9 | | 13th | +5 | Crystalization (7th level) | 15 | 7 | 10 | 9 | | 14th | +5 | Catalyst affinity feature | 16 | 7 | 10 | 9 | | 15th | +5 | Crystalization (8th level) | 17 | 8 | 10 | 9 | | 16th | +5 | Ability Score Improvement | 18 | 8 | 10 | 9 | | 17th | +6 | Crystalization (9th level) | 19 | 9 | 10 | 9 | | 18th | +6 | Reaction Loop | 20 | 9 | 10 | 9 | | 19th | +6 | Ability Score Improvement, Crystalization (two 6th level) | 21 | 9 | 10 | 9 | | 20th | +6 | Catalytic Converter, Crystalization (two 7th level) | 22 | 9 | 10 | 9 |

#### Spellcasting Ability Intelligence is your spellcasting ability for your Catalyst spells. Since you discovered that your body was a born catalyst for the particles of magic in the environment, your constant training has given you enough control to be able to produce controlled magic reactions at will. You use your Intelligence whenever a Catalyst spells refers to your spellcasting ability. In addition, you use your Intelligence modifier when setting the saving throw DC for a Catalyst spell you cast and when making an attack roll with one. ___

**Spell save DC** = 8 + your proficiency bonus +
your Intelligence modifier.
___

**Spell attack modifier** = your proficiency bonus +
your Intelligence modifier. ### Catalyst affinity Choose a Catalyst affinity, which describes what kind of reactions you provoke. Your choice grants you features when you choose it at 1st level and again at 3rd, 6th, 10th, and 14th level. ### Synesthesia Starting at 2nd level, your natural reaction to magic allows you to perceive it anywhere you go, as if you were under the effects of the Detect Magic spell. Additionally, if you touch and study a magic item for at least 10 minutes, you receive the same effect as if you had cast Identify on it. Starting at 5th level, you can perceive the magic essence that every creature emanates. You can see the trail left by every living being, if it was in that place no more than 10 minutes ago and if it wasn't intentionally hiding its presence. If you know the creature you are looking for in person, you can recognize its trail. If you would see a hiding creature's mana trail, you must succed in a pasive Perception (Wisdom) check against the creature stealth roll, otherwise you do not perciebe its mana and you don't know that it was there. Aditionally, you know the age, in years, of anything or anyone that you touch. If you touch anyone or anything for an uninterrupted minute, you also know the most recent school of magic, if any, used by or on it. You don't require to concentrate to obtain this information. At 9th level, you can interpret the mana fluctuations on a creature as natural responses to its emotional state. As an action you can focus your senses on one humanoid you can see within 30 feet of you. You learn the target's prevailing emotion. If the target is not a humanoid or is immune to being charmed, you sense that its mana is confusing and you can't interpret it. ### Ability Score Improvement When you reach 4th level, and again at 8th, 12th, 16th, and 19th level, you can increase one ability score of your choice by 2, or you can increase two Ability Scores of your choice by 1. As normal, you can’t increase an ability score above 20 using this feature. \page

### Mana Reuse Starting at 7th level, you learn how to capture some of the magic lost in the reaction when you overcharge your body. For each time you suffer a mana burn or reduce your Arcane Endurance, you can condense and crystalize one reagent. This reagent takes the form of a tiny spherical crystal, that appears in your hand. If you have both hands occupied, it falls to the ground. You can consume this crystalized reagents as normal reagents as long as you can reach them. Every crystal made in this way vanishes when you finish a long rest. You can use this feature a number of times equal to half of your Catalyst level (rounded down) before you have to finish a long rest. ### Crystallization Starting at 11th level, you can catalyze and materialize the excess of magic your body naturally collects from the world around you into magic crystals. Over the course of 24h, the amount of magic collected is enough to solidify it. These crystals are several times more potent and stable than a spontaneous catalyzation. At the end of a long rest, you can perform a restoration ritual that takes 30 minutes to be complete. After that you create a 6th level crystal. You can use this crystal to cast a spell of the same level or lower. The crystal is consumed in the process. Using a crystal in this way causes any unspent reagent to disappear before casting the desired spell. After you finish a long rest, all of your crystals vanish. Your crystals are a personal manifestation of power, so only you can use them. At higher levels, your restoration ritual can create more crystals that can be used in this way, one 7th-level crystal at 13th level, one 8th-level crystal at 15th level, one 9th-level crystal at 17th level, another 6th-level crystal at 19th level, and another 7th-level crystal at 20th level. ``` ``` ### Reaction Loop At 18th level, your body is constantly catalyzing the mana around you. Now you have acquired the knowledge to take advantage of it, and use the residual energy to produce beneficial effects. As an action, you can affect yourself with one of the following effects until you change or dispell it: * **Levitation:** You have a flying speed equals to your movement speed. You can't fly higher than your maximum speed. * **Improved Synesthesia:** You can see invisible creatures and objects as if they are outlined in light, and you can see into the Ethereal Plane. Ethereal creatures and objects appear ghostly and translucent. * **Mana Static Field:** You can’t be targeted by any divination magic, perceived through magical scrying sensors, and magic can't detect your lies or force you to tell the truth. You can dismiss or change the active effect as an action. If your Arcane Amperage score is reduced to 0, the effect from this feature ends. You can't use this feature as long as your Arcane Amperage score is 0. ### Catalytic Converter At 20th level, you restore your Arcane Amperage score as you would do after a long rest every time you finish a short rest. Additionally, everytime you succeed in a saving throw against a spell or spell like ability, as a reaction you can materialize a number of reagents equal to the spells level, up to 5, as if you have used your Mana Reuse feature.

art by Chase Stone

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art by Stjep Lukac

## Catalyst affinities A Catalyst affinity describes how your body naturally reacts to the magic particles. All Catalysts react to magic, but each Catalyst do it in a different way. Some perceive the energy in the air, others feel the magic in the creatures. When you find out you are a Catalyst, you immediately know you are better with some sort of reactions than others. ### Electrocatalyst Electrocatalysts are better manipulating the energy of the magic reactions than other Catalysts. Their bodies are more sensitive to the energy oscillations, and respond to them faster. #### Cantrips You know the Shocking grasp, Lightning Lure and Fire bolt cantrips.. #### Expanded Spell List The Electrocatalyst affinity lets you choose from an expanded list of spells when you learn one. The following spells are added to the catalyst spell list for you. ##### Electrocatalyst Expanded Spells | Spell Level | Spell | |:----:|:-------------| | 1st | Guiding Bolt, Faery Fire | | 2nd | Aganazzar's Scorcher, Pyrotechnics | | 3rd | Call Lightning, Fireball | | 4th | Conjure Minor Elementals, Fire Shield | | 5th | Cone of Cold, Flame Strike | ``` ``` #### Volatility Starting at 3rd level, each time you take damage from a melee attack, you can use your reaction and use a number of reagents up to your Spell Level (minimum of 0) to deal 2 + (1d8 per spent reagent) lightning damage to the attacker. You can use your Catalyze feature as part of the same action. After using this feature any unspent reagent is lost. #### Reaction Control Starting at 6th level, everytime you cast a spell, a cantrip or use your Volatily feature, you can change any type of damage it would deal for another type of damage of your choice from Fire, Cold, Lightning and Thunder. Additionally, when you reduce a creature to 0 hit points with a spell, a cantrip or your Volatility feature, you can make it unconscious instead of killing it. #### Controlled explosion Starting at 10th level, you can spend 1 aditional reagent as part of the cost of casting a spell that has an area of effect and does damage. If you do so, you can modify the area of effect as you wish, as long as it covers the same amount of square foot as the original area, and each affected square feet is conected with another one or the origin of the effect. #### Conductivity Starting at 14th level, everytime a creature succeed a Saving Throw against a spell cast by you that only targeted it, you can make the spell not affect the target, and bounce to a second creature within 30 feet of the first one. This second target must make the same Saving Throw with advantage. If it fails, it suffers the effects of the spell. If it succeeds, the spell takes no effect. ### Biocatalyst Biocatalyst are exceptional at the art of catalyzing living matter. They feel the vital magic better than others and can lead the reactions to achieve exceptional changes on any living being. #### Cantrips You know the Primal Savagery and Resistance cantrips. #### Expanded spell List The Biocatalyst affinity lets you choose from an expanded list of spells when you learn one. The following spells are added to the catalyst spell list for you. ##### Biocatalyst Expanded spells | Spell Level | Spell | |:----:|:-------------| | 1st | Healing Word, Dissonant Whispers | | 2nd | Enhance Ability, Alter Self | | 3rd | Animate Dead, Feign Death | | 4th | Compulsion, Death Ward | | 5th | Contagion, Modify Memory | #### Bonus Proficiencies When you choose this archetype you gain proficiency with Medium armors. \page

art by Krystian Deviaiuk #### Metabolic transmutation Starting at 3rd level, as an action you can touch a creature and use a number of reagents up to your Spell Level (minimum of 0). The creature gains 1 + (1d4 per spent reagent) temporary hit points. If you target yourself, you gain 2 + (1d8 per spent reagent) temporary hit points. These temporary hitpoints last for 1 hour. #### Infectious mana Starting at 6th level, everytime you cast a spell that targets only one creature and requires a Saving Throw, you can make it Infectious. Any creature who fails a saving throw against a Infectious Spell is not affected by any of the spell's effects. Instead, the spell remains in the creature up to 24h. Any Infectious Spell is automatically casted on the first creature that touches an infected creature (as if you were casting it), regardless of its original range. #### Unnatural selection Starting at 10th level, everytime a spell affects more than one creature and requires a Saving Throw, you can spend 1 or more extra reagents as part of its cost. If you do so, select a number of creatures affected by the spell equal to the number of extra reagents spent in this way, up to half of the total targets (rounded down). They make the Saving Throw with advantage. Then, select the same number of from any of the remaining creatures affected by the spell. They make the Saving Throw with disadvantage. #### Metabolic synchronicity Starting at level 14, as an action you can synchronize your metabolism with that of a willing humanoid you can see within 15 feet of you. While the target is within 300 feet of you, it has resistance to all damage. Also, each time it takes damage, you take the same amount of damage. Additionally, you can use your Metabolic transmutation feature on the target as if you were using it on yourself. This effect ends if you drop to 0 hit points or if you and the target become separated by more than 300 feet. It also ends if you use this feature on another target. You can also dismiss this effect as an action. You can't use this feature if your Arcane Amperage score is 0. ### Nanocatalyst Nanocatalysts are the best of perceiving the energy that holds the matter. They can feel the vibrations of everything and interact with them, changing the composition of the matter itself. #### Cantrips You know the Magic Stone, Shillelagh and Mending cantrips. #### Expanded spell List The Nanocatalyst affinity lets you choose from an expanded list of spells when you learn one. The following spells are added to the catalyst Spell list for you. ##### Nanocatalyst Expanded Spells | Spell Level | Spell | |:----:|:-------------| | 1st | Goodberry, Tenser's floating disk | | 2nd | Maximilian's Earthen Grasp, Enlarge/Reduce | | 3rd | Tiny Servant, Conjure Barrage | | 4th | Stone Shape , Otiluke's Resilient Sphere | | 5th | Creation, Conjure Volley | #### Molecular instability Starting at 3rd level, you can destabilize the chemical composition of any object using your arcane powers. As an action, you can spend reagents (minimum of 0) and touch one non magical object of up to 1 cubic foot that is not being held by another creature, and make it dangerously reactive. Choose one kind of physical interaction (such as being touched, hit, squeezed, etc), a material (such as steel, organic, orc skin, etc) and a damage type from Fire, Cold, Acid, Necrotic, Force, Lightning and Thunder. When the object interacts in the described way with the described material, it reacts, causing 2 + (1d8 per spent reagent) points of the chosen damage to the object or creature that triggered it. Optionally, you can choose to not specify the material, and make the object react to anything that interacts with it in the described way. The maximum number of objects that can be affected this way is equal to your intelligence modifier (minimum of 1). Exceeding the limit makes the effect on the first object disappear. While under this effect, the object is considered magical. When you finish a long rest, any object affected by this feature becomes stable and loses its magic. \page

art by Adam Legendary

#### Molecular disruption Starting at 6th level, when you use your Molecular instability feature, you can make it not deal damage. Instead, when it reacts, it turns into a translucent fluid called plasma for 10 minutes. You can end this effect early as a bonus action. When the effect ends, the object ceases to be plasma and returns to its original material, but it retains its new form. Additionally you know the Shape Water cantrip, and you can use it to manipulate any plasma made by this feature. You can't use this feature if your Arcane Amperage score is 0. #### Molecular rearrangement Starting at 10th level, you can use your Molecular instability on bigger objects. The size of the target can be up to 5 cubic feet. Additionally, you can target objects that are being held by another creature, but the wielder must make a Constitution Saving Throw against your spell DC. If it succeed, this feature has no effect on the object. Now you can use your Shape Water cantrip on plasma to make more complex forms. To do it, you must concentrate for 10 minutes while using your Shape Water cantrip and spend 1 reagent. After that, make an Intelligence check against the same DC as if you were crafting what you want to craft by mundane means. You can't use this feature if your Arcane Amperage score is 0. #### Molecular transmutation Starting at 14th level, as an action you can rearrange the atoms of any plasma created using your Molecular Instability feature, transmuting it into a different type of material, as long as the new material has approximately the same mass, and an equal or lower price. You can't use this feature if your Arcane Amperage score is 0.

``` ``` ## Catalyst Spell List #### Level 1 - *Absorb elements* - *Alarm * - *Armor of Agathys * - *Bane * - *Burning hands * - *Chromatic Orb * - *Disguise Self * - *Expeditious Retreat * - *Feather Fall * - *Ice Knife * - *Inflict Wounds * - *Mage Armor * - *Magic Missile * - *Shield * - *Silent Image * - *Sleep * - *Thunderwave * - *Witch Bolt * #### Level 2 - *Blur * - *Calm Emotions * - *Crown of Madness * - *Darkness * - *Darkvision * - *Dragon's Breath * - *Dust Devil * - *Flaming Sphere * - *Heat Metal * - *Hold Person * - *Levitate * - *Magic Weapon * - *Mirror Image * - *Scorching Ray * - *Shadow Blade * - *Web * #### Level 3 - *Bestow Curse * - *Counterspell * - *Dispel Magic * - *Enemies Abound * - *Erupting Earth * - *Fly * - *Glyph of Warding * - *Lightning Bolt * - *Plant Growth * - *Remove Curse * - *Speak with Dead * - *Speak with Plants * - *Wall of Sand * - *Water Walk * \page

#### Level 4 - *Blight * - *Dominate Beast * - *Freedom of Movement * - *Grasping Vine * - *Hallucinatory Terrain * - *Ice Storm * - *Phantasmal Killer * - *Storm Sphere * - *Vitrolic Sphere * - *Wall of Fire * #### Level 5 - *Bigby's Hand * - *Circle of Power * - *Control Winds * - *Destructive Wave * - *Dominate Person * - *Enervation * - *Hold Monster * - *Immolation * - *Scrying * - *Synaptic Static * - *Telekinesis * - *Wall of Stone * - *Wrath of Nature * #### Level 6 - *Blade Barrier * - *Chain Lightning * - *Contingency * - *Disintegrate * - *Eyebite * - *Flesh to Stone * - *Globe of Invulnerability * - *Harm * - *Investiture of Flame * - *Investiture of Ice * - *Investiture of Wind * - *Move Earth * - *Oriluke's Freezing Sphere * - *Sunbeam * - *Wall of Ice * - *Wind Walk * #### Level 7 - *Crown of Stars * - *Delayed Blast Fireball * - *Finger of Death * - *Fire Storm * - *Mirage Arcane * - *Mordenkainen's Magnificent Mansion * - *Mordenkainen's Sword * - *Power Word Pain * - *Prismatic Spray * - *Symbol * #### Level 8 - *Abi-Dalzim's Horrid Wilting * - *Antimagic Field * - *Control Weather * - *Dominate monster * - *Earthquake * - *Incendiary Cloud * - *Maddening Darkness * - *Power Word Stun * - *Sunburst * - *Tsunami * #### Level 9 - *Gate * - *Invulnerability * - *Meteor Swarm * - *Power Word Heal * - *Power Word Kill * - *Prismatic Wall * - *Storm of Vengeance * - *Time Stop * - *True Polymorph * - *Weird *

>##### Playtest Material >**All content will probably be tweaked for purposes of balance** > >English is not my native language, so I hope that there aren't a lot of mistakes in the text. My Reddit username is raccoonlx

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