Special Traits

Air Form. The Sleet 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.

Flyby. The Sleet Elemental doesn’t provoke opportunity attacks when it flies out of an enemy’s reach.

Legendary Resistance (1/Day). If the tempest fails a saving throw, it can choose to succeed instead.

Living Storm. The Sleet Elemental is always at the center of a storm 1d6 + 4 miles in diameter. Heavy precipitation in the form of either freezing rain or snow falls there, causing the area to be lightly obscured. Heavy freezing rain also extinguishes open flames and imposes disadvantage on Wisdom (Perception) checks that rely on hearing. In addition, strong winds swirl in the area covered by the storm. The winds impose disadvantage on ranged attack rolls. The winds extinguish open flames and disperse fog.

Siege Monster. The Sleet Elemental deals double damage to objects and structures.

Actions

Multiattack. The tempest makes two attacks with its thunderous slam.

Thunderous Slam. Melee Weapon Attack: +10 to hit, reach 20 ft., one target. Hit: 23 (4d6 + 4) thunder damage.

Sleet Storm (3/Day). All other creatures within 120 feet of the Sleet Elemental must each make a DC 16 Dexterity saving throw, taking 18 (4d8+2) cold damage on a failed save, or half as much damage on a successful one. If a target’s saving throw fails by 5 or more, the creature is also partially frozen causing it to become stunned until the end of its next turn.

Elemental Spawn (1/Day). The Sleet Elemental spawns 6 (2d4+2) Ice Mephits in unoccupied spaces that it can see within 120 feet. For each Mephit spawned, the Sleet Elemental loses 11hp.