Summon Geyser

You summon a bubbling, rumbling geyser in a 10-foot radius circle centered at a point on the ground within range.

At the start of your next turn, the geyser erupts. Any creature still in the area, or up to 40 feet above it, must make a Dexterity saving throw. On a failure, they take 36 (8d8) bludgeoning damage and land prone on the ground. On a success, they take half damage and are not knocked prone.

At Higher Level: When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 and the radius increases by 5 feet for every level above 4th.