Serpent Arrows

4th-level transmutation (Artificer,Druid,Ranger,Warlock,Wizard)

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• Casting Time: 1 action
• Range: Touch
• Components: V, S, M (a serpent scale)
• Duration: Concentration, up to 1 hour

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You touch a quiver containing arrows or bolts. When a target is hit by a ranged weapon attack using a piece of ammunition drawn from the quiver, the target takes an extra 2d6 poison damage. Even if the attack misses, the target takes 1d6 poison damage. The spell's magic ends on the piece of ammunition when it hits or misses, and the spell ends when ten pieces of ammunition have been drawn from the quiver. After each attack, whether it hits or misses, the used piece of ammunition falls into an unoccupied space closest to the target, where it transforms into a giant poisonous snake under the control of the creature who attacked with the ammunition. Giant poisonous snakes created by this spell are friendly to you and your companions. They act on the initiative of the creature who attacked with the ammunition, immediately after that creature's turn ends, but act on their own. The snakes obey any verbal commands issued by the creature controlling them (no action required by you). If that creature doesn't issue any commands, the snakes continue to attack the target of the ranged attack (even if the target has dropped to 0 hit points), but otherwise take no actions beyond defending themselves. Each snake changes back into a piece of ammunition when it drops to 0 hit points or when the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the number of pieces of ammunition you can affect increases by two for each slot level above 4th.