Armor Class
19
Elder Tempest
Gargantuan Elemental · Neutral
Hit Points
264 (16d20 + 96)
Speed
Walk, Fly 120 ft. ((hover))
CR
23
Traits
Air Form
The tempest 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 tempest doesn't provoke opportunity attacks when it flies out of an enemy's reach.
Legendary Resistance (3/Day)
If the tempest fails a saving throw, it can choose to succeed instead.
Living Storm
The tempest is always at the center of a storm miles in diameter. Heavy precipitation in the form of either rain or snow falls there, causing the area to be lightly obscured. Heavy rain also extinguishes open flames and imposes disadvantage on Wisdom () 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.
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 tempest deals double damage to objects and structures.
Actions
Multiattack
The tempest makes two attacks with its thunderous slam.
Thunderous Slam
Melee Weapon Attack +16 to hit, reach 20 ft., one target. 23 () Thunder damage.
ThunderLightning Storm Recharge 6
All other creatures within 120 feet of the tempest must each make a DC 20 Dexterity saving throw, taking 27 () Lightning 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 until the end of its next turn.
LightningLegendary Actions
Move
The tempest moves up to its speed.
Lightning Strike (Costs 2 Actions)
The tempest can cause a bolt of lightning to strike a point on the ground anywhere under its storm. Each creature within 5 feet of that point must make a DC 20 Dexterity saving throw, taking 16 () Lightning damage on a failed save, or half as much damage on a successful one.
Screaming Gale (Costs 3 Actions)
The tempest releases a blast of thunder and wind in a line that is 1 mile long and 20 feet wide. Objects in that area take 22 () Thunder damage. Each creature there must succeed on a DC 21 Dexterity saving throw or take 22 () Thunder damage and be flung up to 60 feet in a direction away from the line. If a thrown target collides with an immovable object, such as a wall or floor, the target takes 3 () Bludgeoning damage for every 10 feet it was thrown before impact. If the target would collide with another creature instead, that other creature must succeed on a DC 19 Dexterity saving throw or take the same damage and be knocked .
Bludgeoning