Aqueous Typhoon

You touch a creature within reach and summon forth a whirlwind of constricting water to surround them for the duration. The target must succeed on a Constitution saving throw or take 1d8 cold damage. The target takes an additional 1d4 cold damage at the start of each round for the duration.

This spell's duration increases by 1 round when you reach 5th level (2 round), 11th level (3 rounds), and 17th level (4 rounds).