Elder Tempest

Terrifying storms manifest in the body of the elder tempest. A being carved from clouds, wind, rain, and lightning, the elder tempest assumes the shape of a serpent that slithers through the sky. The tempest drowns the land beneath it with rain and stabs the earth with lances of lightning. Punishing winds scream around it as it flies, feeding the chaos it creates.

Elder Tempest CR: 23 (50,000 XP)

Gargantuan elemental, neutral

Armor Class: 19

Hit Points: 264 (16d20 + 96)

Speed: 0 ft , can hover

STR

23 +6

DEX

28 +9

CON

23 +6

INT

2 -4

WIS

21 +5

CHA

18 +4

Saving Throws: Wis +12, Cha +11

Damage Resistances: Bludgeoning, Piercing, and Slashing from nonmagical attacks

Damage Immunities: Lightning, Poison, Thunder

Condition Immunities: Exhausted, Grappled, Paralyzed, Petrified, Poisoned, Prone, Restrained, Stunned

Senses: Darkvision 60 feet, Passive Perception 15

Languages: None

Challenge Rating: 23 (50,000 XP)

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 1d6 + 4 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 (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 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 feet, one target. Hit: 4d6 + 9 thunder damage.
Lightning Storm (Recharge 6). All other creatures within 120 feet of the tempest must each make a DC 20 Dexterity saving throw, taking 6d8 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 stunned until the end of its next turn.

Legendary Actions

The tempest can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The tempest regains spent legendary actions at the start of its turn.
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 3d10 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 4d10 thunder damage. Each creature there must succeed on a DC 21 Dexterity saving throw or take 4d10 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 1d6 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 prone.

Genetic Ancestor(s)

• Elder Elementals

Lifespan

Immortal

Average Weight

30 pounds

Average Length

60 feet