Drown

You conjure a globe of magical water to surround a foe's head and drown it. Choose one creature in range that you can see. The target must make a Strength saving throw. On a failed saving throw, the target cannot speak and has disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight or hearing until the spell ends. While the spell continues, it takes 2d8 bludgeoning damage at the start of each of its turns. At the end of each of its turns, the creature can repeat the saving throw. On a success, the creature breaks free and the spell ends. Creatures that can breathe water or do not have to breathe automatically succeed on the saving throw.

A creature can hold its breath for a number of minutes equal to 1 + its Constitution modifier (minimum of 30 seconds). When a creature runs out of breath or is choking, it can survive for a number of rounds equal to its Constitution modifier (minimum of l round). At the start of its next turn, it drops to O Hit Points and is dying, and it can't regain Hit Points or be stabilized until it can breathe again.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage dealt increases by ld8 for each slot level above 2nd When you cast this spell using a spell slot of 5th level or higher, the duration increases to Concentration up to 10 minutes, and the target can only hold its breath for up to 30 seconds before suffocating.