Spellcasting. The elemental is a base-level spellcaster, with the ability to cast Light and Prestidigitation. The elemental does not need vocal, material or somatic components to cast; it simply does so at will.

Celestial Nature. The elemental does not need to breathe; it won't drown in water, air, ground or void.

Immutable Form. The elemental's shape cannot be changed without its consent.

Form Part. The elemental creates an extra body part or set of parts to change its shape, capping at two (sets of) parts at a time. As a bonus action, any of these parts can be reabsorbed at will. Each part enables the elemental to make special moves:

• Set of Legs

Strike. Melee  Weapon Attack: +3 to hit, reach 4 ft, one target. Hit: 4 (1d4 + 2) bludgeoning damage.

Run. The elemental moves up to twice its flying speed in walking speed.

• Set of Claws

Scratch. Melee Weapon Attack: +2 to hit, reach 4 ft, one target. Hit: 6 (1d4 + 4) slashing damage.

Dig. The elemental moves up to its flying speed in burrowing speed, leaving a 3-feet diameter tunnel in its wake. It can't dig through metal, and leaves no tunnel in sand.

• Tail / Set of Flippers

Lash. Melee Weapon Attack: +3 to hit, reach 4 ft, one target. Hit: 4 (1d4 + 1) thunder damage. If applicable, the target gets skin inflammation, giving them disadvantage on their next Constitution check.

Swim. The elemental moves up to its flying speed in swimming speed.

• Jaws

Bite. Melee Weapon Attack: +4 to hit, reach 2 ft, one target. Hit: 7 (1d6 + 2) piercing damage. The elemental has its target grappled, but not restrained. The elemental can't bite another target while grappling.

Maul. If available, the elemental makes a strike or scratch attack on a grappled target as a bonus action.