Basilisks

Basilisk Lore

Alchemist's Tools DC 15: The digestive fluids of the true basilisk can be mixed with rendered fat to create a salve that cures petrification, though the volatile compounds present last only a few hours before losing their potency.
Alchemist's Tools DC 20: Certain alchemists have claimed to be able to produce a generalized tincture of Stone To Flesh from these fluids, enabling a particularly grisly method of tunneling through stone, though such claims thus far remain unsubstantiated.
Animal Handling DC 20: Social animals that they are, it is theoretically possible to tame a basilisk, though few are brave or foolhardy enough to try.
History DC 15: While basilisks are never known to petrify one another in dominance contests, they seem particularly aggravated by the sight of their own reflection, and can often be goaded into petrifying themselves with a large mirror and the proper encouragement.
Nature DC 10: Basilisks use their petrifying gaze to immobilize any prey not intelligent enough to avert its gaze, crushing stone with their impossibly sturdy teeth and then converting it back into flesh as they digest it.
Nature DC 15: While the true basilisk with its petrifying gaze is the best known variety, various subspecies exist across the world, exhibiting a wide variety of magical gaze abilities.
Religion DC 20: In some of the deepest reaches of the Abyss yet probed by mortal magics, an endemic species of basilisk is rumored to lurk, larger and more fearsome than any of its material kin. Despite this reputation, it is still sought by adventurous hunters, prized for claims of the superior curatives that can be distilled from its bodily humours.


Venom-Eye Basilisk

Small monstrosity, unaligned


  • Armor Class 13 (Natural Armor)
  • Hit Points 18 (4d8)
  • Speed 20 ft., burrow 5 ft., climb 10 ft.

STR DEX CON INT WIS CHA
14 (+2) 8 (-1) 11 (+0) 2 (-4) 8 (-1) 7 (-2)

  • Damage Resistances Poison
  • Senses Darkvision 60 Ft., Passive Perception 9
  • Challenge M9 (500 XP)

Venomous Gaze. A creature that starts its turn within 30 feet of one or more venom-eye basilisks takes 1 poison damage for each of those basilisks it can see, then must succeed on a DC 15 Constitution saving throw or be Poisoned until the beginning of its next turn.

Unless surprised, a creature can avert its eyes at the beginning of its turn to avoid this effect, treating the basilisk as Invisible until the beginning of its next turn.

Minion. If the basilisk takes damage from an attack or as the result of a failed saving throw, its hit points are reduced to 0. If the basilisk takes damage from another effect, it dies if the damage equals or exceeds its hit point maximum, otherwise it takes no damage.

Actions

Snapping Bites (Group Attack). Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 4 piercing damage.


Wilt-Eye Basilisk

Medium monstrosity, unaligned


  • Armor Class 15 (Natural Armor)
  • Hit Points 52 (8d8 + 16)
  • Speed 20 ft., burrow 5 ft., climb 10 ft.

STR DEX CON INT WIS CHA
16 (+3) 8 (-1) 14 (+2) 2 (-4) 8 (-1) 7 (-2)

  • Damage Resistances Poison
  • Senses Darkvision 60 Ft., Passive Perception 9
  • Challenge 3 (700 XP)

Wilting Gaze. When a creature that can see the basilisk (or its reflection) starts its turn within 30 feet of it, the basilisk can force it to succeed on a DC 12 Constitution saving throw or deals only half damage with weapon attacks until the beginning of its next turn.

Unless surprised, a creature can avert its eyes at the beginning of its turn to avoid this effect, treating the basilisk as Invisible until the beginning of its next turn.

Actions

Drooling Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage plus 7 (2d6) poison damage.

Wither. One creature affected by the basilisk's wilting gaze must succeed on a DC 12 Constitution saving throw or take 22 (4d10) necrotic damage. A creature reduced to 0 hit points in this way has disadvantage on death saving throws for the next minute.

Reactions

Darting Snap.When a creature that is averting its eyes from the basilisk misses it with a melee attack, the basilisk can make a Drooling Bite attack against it.

Basilisk Tactics

Basilisks pop out of their burrows and hiss threateningly, trying to lure an unsuspecting creature into looking at them. If a creature looks at them, they keep their distance, repeatedly trying to use their Wither or Petrify as they kite it around through various cover and difficult environments. They close to melee and use their bite only if a creature averts its gaze, or once they have debilitated it with their gaze.

If the basilisk incapacitates a creature but remains outnumbered by the creature's allies, it will often retreat, but stay nearby and wait to see if they abandon it, returning to attack again if they try to take their fallen companion with them.


True Basilisk

Medium monstrosity, unaligned


  • Armor Class 16 (Natural Armor)
  • Hit Points 90 (12d8 + 36)
  • Speed 20 ft., burrow 5 ft., climb 10 ft.

STR DEX CON INT WIS CHA
19 (+4) 8 (-1) 17 (+3) 3 (-4) 8 (-1) 7 (-2)

  • Damage Resistances Poison
  • Senses Darkvision 60 Ft., Passive Perception 9
  • Challenge 5 (700 XP)

Ossifying Gaze.When a creature that can see the basilisk (or its reflection) starts its turn within 30 feet of it, the basilisk can force it to succeed on a DC 13 Constitution saving throw or be restrained until the beginning of its next turn as its flesh begins to turn to stone.

Unless surprised, a creature can avert its eyes at the beginning of its turn to avoid this effect, treating the basilisk as Invisible until the beginning of its next turn.

Actions

Gravelchewer Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage plus 7 (2d6) poison damage.

This attack ignores any resistance to piercing damage.

Petrify. One creature affected by the basilisk's Ossifying Gaze must succeed on a DC 13 Constitution saving throw or be Petrified for the next 24 hours. A creature that fails this save by 5 or more is Petrified until cured with a Greater Restoration or similar magic.

Reactions

Darting Snap.When a creature that is averting its eyes from the basilisk misses it with a melee attack, the basilisk can make a Gravelchewer Bite attack against it.

Encounter Groups

CR 12 Encounter 3,500 XP

  • 1 True Basilisk (CR 5)
  • 1 Maedar (CR 4)
  • 3 Stone Cursed (CR 1)

CR 15 Encounter 5,500 XP



Abyssal Basilisk

Large monstrosity, unaligned


  • Armor Class 17 (Natural Armor)
  • Hit Points 228 (24d10 + 96)
  • Speed 30 ft., burrow 20 ft., climb 20 ft.

STR DEX CON INT WIS CHA
21 (+5) 18 (+4) 19 (+4) 5 (-3) 14 (+2) 7 (-2)

  • Saving Throws DEX +8, CON +8
  • Skills Stealth +8, Perception +6, Survival +6
  • Damage Resistances Cold, Fire, Lightning; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
  • Damage Immunities Poison
  • Condition Immunities Charmed, Frightened, Poisoned
  • Senses Darkvision 60 Ft., Passive Perception 16
  • Challenge 12 (8,400 XP)

Ossifying Gaze. A creature that starts its turn within 30 feet of the basilisk that can see it (or its reflection) must make a DC 16 Constitution saving throw. On a failed save, the creature magically begins to turn to stone and is restrained until the beginning of its next turn.

At the beginning of its turn, a creature that isn't Surprised can avert its gaze, treating the basilisk as Invisible until the beginning of its next turn.

Tunneler. The basilisk can burrow through solid rock at half its burrow speed and leaves a 5-foot-diameter tunnel in its wake.

Magic Resistance. The marilith has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The basilisk makes three attacks with its Claw Swipe, one of which it may replace with its Stonecrushing Bite or its Petrify.

Stonecrushing Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 18 (3d8 + 5) piercing damage plus 10 (3d6) poison damage.

If the target is petrified, it must succeed on a DC 17 Constitution saving throw or lose a limb of its choice.

Claw Swipe. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 15 (3d6 + 5) slashing damage.

On a critical hit, the target is knocked prone, and must immediately make a saving throw against the basilisk's Ossifying Gaze.

Petrify. One creature affected by the basilisk's ossifying gaze must succeed on a DC 16 Constitution saving throw or be petrified until cured with a Greater Restoration or similar magic.

Reactions

Darting Snap. As a reaction to a creature that is averting its eyes missing the basilisk with a melee attack, the basilisk may make a bite attack against the attacker.

Art Credits

  • Basilisk by Ilya Shkipin
  • Turntimber Basilisk by Goran Josic
  • Bisk, Goblin King by Rae Elderidge

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