## Otherworldly Patron: Bill Cipher

Your patron is Bill Cipher, the triangular, demonic entity that haunts the town of Gravity Falls, Oregon. Bill is sometimes described as a Dream Demon, for he can be summoned and bargained with to enter the mind of a target and just kind of mess around in there, doing evil stuff. Nearly godlike in power, Bill is an egotist and a charlatan who will screw over a business parter like a used car salesman.

#### Expanded Spell List

Bill Cipher lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

##### Bill Cipher Expanded Spells
| Spell Level | Spells |
|:----:|:-------------|
| 1st | *dissonant whispers, sleep* |
| 2nd | *detect thoughts, silence* |
| 3rd | *bestow curse, tongues* |
| 4th | *confusion, dominate beast* |
| 5th | *dominate person, destructive wave* |

#### Demonic Prescence
Starting at 1st level, you can use an action to project Bill Cipher's horrifying prescence into the minds of your enemies. When you do so, choose a creature that you can see within 30 feet of you. That creature must make a Wisdom saving throw against your  warlock spell save DC. On a failed save, the target gains a randomly determined form of short-term madness for one minute (DMG 259). The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Once you use this feature, you can't do so again until you finish a short or long rest.

#### Mind Shield
Starting at 6th level, your dealings with eldritch forces have strengthened your will and shielded your mind. You have advantage on saving throws against being frightened, charmed, possessed, or driven mad.

#### Nightmare Walk
At 10th level, you learn the *dream* spell if you do not already know it. This spell does not count against the number of warlock spells you know. When you cast *dream*, you can force the target to make a Wisdom saving throw against your warlock spell save DC. On a failed save, choose one of the following effects:

* **Steal Memory.** You gain one of the target's memories that is less than a week old. The DM chooses what memory you gain.
* **Destroy Memory.** You choose one of the target's memories of which you already know; which occured no more than 24 hours ago; and which lasted no longer than 10 minutes. The target loses all recollection of that memory, as if you had cast *modify memory* on it.

Once you force a target to make a saving throw with this feature, you cannot do so again until you complete a long rest.

#### Possession
Starting at 14th level, you learn from Bill Cipher how to take over the bodies of other humanoids. As an action, you can force a humanoid that you can see with a challenge rating less than or equal to your level to make a Charisma saving throw against your spell save DC. On a failed save, the creature's soul is shunted out of its body, your body temporarily disappears, and your soul moves into the target's body.

Once you possess a humanoid's body, you control it. Your game statistics are replaced by the statistics of the humanoid, though you retain your alignment, personality, and Intelligence, Wisdom, and Charisma scores. You retain the benefit of your class features. If the target has any class levels, you can't use any of its class features.

Meanwhile, the target's soul is disconnected from its body. The target's soul is a ghost-like form on the border ethereal plane unable to affect the environment except through small effigies such as sock puppets. It has a flying speed of 30 feet.

While possessing a body, you can use your action to return to your own body. Choose a point within 30 feet of the possessed body. Your body appears at that point, and your soul immediately moves into it. The host body becomes inert and appears dead, but the host's soul can repossess it.

If the host body dies while your soul is in it, you must immediately roll a Charisma saving throw against your own warlock spell save DC. On a successful save, you can use your reaction to return to your own body. If you fail the saving throw or don't have your reaction available, you die and your body is lost forever and cannot be restored by any magic less powerful than *true ressurection*. Either way, the host's body becomes inert and appears dead, but the host's soul can repossess it.

Once you use this feature, you can't use it again until you finish a long rest.

[**Image Credit**](
 http://gravityfalls.wikia.com/wiki/Bill_Cipher)
 
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