Venomous Fangs

4th-level transmutation (formula)

Casting Time: 5 hours (5 phases of 1 hour when cast as a formula)

Range: Touch

Components: V, S, M (rare herbs and oils worth 1,000 gp, which the spell consumes in lasting mode), SC (target)

Formula Ability Checks: Intelligence with alchemist’s supplies or poisoner’s kit DC 14, Wisdom (Medicine) DC 14, Intelligence with alchemist’s supplies or Wisdom (Medicine) DC 16

Formula Backlash: One level of exhaustion

Formula Failure: 3d10 poison damage and poisoned until finishing a long rest

Duration: 8 hours or instantaneous

With this Tcho-Tcho technique, you cause a creature that you perform surgery upon during the casting time to grow a venom gland attached to one natural weapon it has, such as claws or fangs. This spell has no effect on creatures lacking natural weapons. The chosen natural weapon secretes venom once on each of the target’s turns. A creature hit by an unarmed strike with this natural weapon must make a Constitution saving throw. On a failed save, it takes 1d10 poison damage and is poisoned until the end of its next turn.

Remove curse, restoration, or similar magic can remove the gland produced by venomous fangs, if the target is willing to have it removed.

You can cast this spell in one of two modes: temporary or lasting.

Temporary. When you cast this spell in temporary mode, it lasts 8 hours. When cast this way, the spell doesn’t consume the material components.

Lasting. When you cast this spell in lasting mode, it is instantaneous, leaving the creature’s body indefinitely modified thereafter. When cast this way, the spell consumes the material components.