Acidic 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. If a hostile creature begins its turn with the elemental in its space, it takes (1d6) acid damage.

Multiattack. The elemental makes two bash attacks.

Bash. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8+3) bludgeoning damage plus 4 (1d8) acid damage.

Acid Spray (Recharge 4–6). Each creature in the elemental's space or within 5 feet of it must make a DC 15 Constitution saving throw. On a failure, a target takes 13 (3d8) acid damage.