Sand Form. The elemental can move through a space as narrow as 1 inch wide without squeezing. The elemental can enter a hostile creature's space and stop there. The first time it enters a creature's space on a turn, that creature takes 5 (1d10) bludgeoning damage.

Siege Monster. The elemental deals double damage to objects and structures.

False Appearance. While the elemental remains motionless, it is indistinguishable from normal sand.

Multiattack. The elemental makes two slam attacks.

Slam. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 25 (4d8 + 7) bludgeoning damage.

Sandstorm (Recharge 5-6). The elemental emits a sandstorm in a 60 ft. radius sphere centered on itself. Each creature in the area must make a DC 18 Constitution saving throw. On a failure, a target takes 28 (8d6) bludgeoning damage and is restrained, partially buried in sand.

If the saving throw is successful, the target takes half the damage and isn't restrained.