Curse of the Drowned

Choose one creature within 60 feet. The target must make a Constitution saving throw.

On a failed save, the creatures lungs are filling with icy seawater.

While cursed:

• The creature is unable to speak above a whisper.
• Whenever it casts a spell with a verbal component it takes 3d8 necrotic damage.
• It's speed is reduced by half, whenever attempting a Dash action it takes 3d8 necrotic damage.
• After taking this damage, it must succeed on a Constitution saving throw or lose its reaction until the start of its next turn.
• If the creature takes this damage three times before the spell ends, it becomes Stunned until the end of its next turn as the water overwhelms it.

The creature repeats the original saving throw at the end of each of its turns, ending the spell on a success.