Self-Aligned Final Boss with Light Magic
You begin the game with 22 HP or 3x the starting HP of other players (depending on if another role introduces an HP system). If another role does not, then all other players begin with 8 HP.
You also start the game with five mana. Each night while you have mana, you may attempt to cast one of the following spells (provided you have enough mana):
Blind (1 mana): Shines a bright light at a target, blinding them. They gain the "blind" status and have a 75% chance of their non-factional active abilities failing each night. This status is cured by doctors and effects that explicitly name the status. They also lose 1 HP.
Cure (2 mana): Heals a target with healing magic. Equivalent to the effect of a doctor. This spell can self-target.
Cure 2 (3 mana): Like cure but the target also gains 2 HP.
Energy Blast (2 mana): Blasts a target with a burst of light energy. They lose 3 HP.
Auto-Revive (5 mana): Grants a target special blessing. They will automatically come back to life the next time they would otherwise die. This spell can be self-targeted.
As the final boss, you don't play by the same rules as others and gain an additional two mana every night you survive.
You win when you are the last player alive or when nothing can prevent the same.