Drown

When you cast this spell, choose one creature within 30ft that you can see. You attempt to transmute the air in the targets lungs into water. The target must make a Constitution saving throw, on a success the spell ends. On a failure, the creature becomes restrained and begins to drown. On each turn after you cast this spell, you may choose to continue concentrating on the spell as a bonus action. If you do, the creature must make an additional saving throw to force the water from their lungs and end the spell. For every round the target fails a saving throw after the first, they gain one level of exhaustion. If at any point, the target makes a successful saving throw, the spell ends. Any creature that can breathe under water, is under the effects of the water breathing spell, or doesn’t have lungs, automatically succeeds on their saving throw. Creatures under water make their saving throw at disadvantage.