Water Form. The elemental can enter a hostile creature's space and stop there. It can move through a space as narrow as 1 inch wide without squeezing.
Freeze. If the elemental takes cold damage, it partially freezes; its speed is reduced by 20 feet until the end of its next turn.
Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) bludgeoning damage. If the target has been hit by another minor water elemental's slam attack this round, it must succeed on a DC 11 Strength saving throw or be pushed 5 feet in a direction of this elemental's choice.