Air Elemental Elder

Air 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.

Evasion. When the elemental is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Multiattack. The elemental makes two slam attacks or one slam attack and one Wind Lash attack.

Slam. Melee Weapon Attack. +9, reach 5 ft., 1 target. Hit: 18 (2d10 + 7) bludgeoning damage.

Whirlwind (Recharge 4–6). Strength Saving Throw: DC 16, one Large or smaller creature in the elemental’s space. Failure: 22 (4d8 + 4) Bludgeoning damage. A creature that succeeds takes half as much damage and isn't caught. A creature caught in the whirlwind is restrained and takes 11 (2d10) bludgeoning damage at the start of the elemental's turns. A creature restrained by the whirlwind can use its action to make a DC 16 Strength check. On a success, it is no longer restrained by the whirlwind. A creature can be released from the whirlwind if the elemental moves, or a creature that is caught can be flung free by the elemental as a bonus action. If it is flung, it is thrown 3d6 x 10 feet in a random direction and lands prone.

Gale Force. The elemental creates a swirling vortex of wind in a 20-foot-radius sphere centered on a point it can see within 60 feet. The sphere spreads around corners, and lasts for 1 minute. Each creature in the vortex at the start of its turn must make a DC 16 Constitution saving throw. On a failed save, a creature takes 16 [rollable(3d10);{"diceNotation":"3d10","rollType":"damage","rollAction":"Gale Force","rollDamageType":"Bludgeoning"}[/rollable] bludgeoning damage and is pushed away 10 feet. On a successful save, a creature takes half as much damage and is not pushed.