You conjure a large mass of water and form it into a whirling funnel around a point on the ground you can see. The whirling funnel fills a 10-foot-radius, 30-foot-high cylinder. Once per turn, when a creature's space becomes fully engulfed by the waterspout it must make a Strength saving throw. On a failure, it takes 2d8 bludgeoning damage, and becomes blinded, deafened, and cannot speak. At the start of its next turn, it is expelled from the water to the nearest empty space. On success, it takes half as much damage and suffers none of the spell’s other effects.
On your turn, you can move the waterspout up to 20 feet in any direction along the ground as a bonus action, engulfing any creatures in its path. Creatures who fail their save after being engulfed by the waterspout in this way are carried along with its movement until they are ejected at the start of their turn as normal.
If the center point of this spell is over a Huge or larger body of water, the size of the waterspout is doubled.