Draugrs Breath

You force water into your opponents lungs causing them to begin drowning. Dealing 1d8 acid damage and forcing the target to make a constitution saving throw. On a failed save the target is unable to cast spells with verbal components or talk. 

At the end of subsequent turns the target may attempt the constitution saving throw again to end their silence.

At Higher levels: When you cast this spell using a slot of 4th, 6th, or 8th level you may target an additional target and deal an additional 1d8 per 2 levels above second.