One of Us

7th-level transmutation (sorcerer, wizard)

Casting Time: 1 action

Range: 60 feet

Components: V, S, M (the blood of a polymorphed creature)

Duration: Permanent

The target makes a Constitution saving throw or you forcibly impose the mana-wasted template on it, transforming it into a warped and deformed mockery of its true form. In addition, a creature transformed by this spell must succeed on a Wisdom saving throw or gain the charmed condition.

The charmed target can always understand your speech (even if you do not share a language), treating you as a trusted friend and ally. However, a creature transformed by one of us retains a dim memory of your role in its transformation from something else, with a seed of rage against you ready to be ignited if shocked back to its senses.

Whenever the target takes a critical hit or succeeds on a saving throw against an enchantment effect, it can attempt a Wisdom saving throw as a reaction to break free of your charm for 1d12 hours, permanently breaking it if it rolls a natural 20 on the die. The charm effect can be dispelled with dispel magic, but it returns after 1d12 hours unless the curse is removed with greater restoration or a similarly powerful healing spell.

The physical transformation caused by this spell cannot be dispelled but can be removed with genetic purification or wish.