This spell allows you to move like water. When you cast this spell, and then as a bonus action on each of your turns until the spell ends, you can move up to 20 feet in a straight line. While moving this way, you can move through another creature's space. When you move through a creature's space for the first time on a turn, it must succeed on a Strength saving throw or take 2d6 bludgeoning damage and be knocked prone.