Yan-C-Bin
Huge elemental, neutral evil
Armor Class
22 (natural armor)
Hit Points
283 (21d12+147)
Speed
50 ft., fly 150 ft.
STR
18 (+4)
DEX
24 (+7)
CON
24 (+7)
INT
16 (+3)
WIS
21 (+5)
CHA
23 (+6)
Damage Immunities
lightning, poison, thunder
Damage Resistances
cold, fire; bludgeoning, piercing, and slashing from nonmagical weapons
Condition Immunities
charmed, frightened, paralyzed, petrified, poisoned, prone, restrained
Senses
blindsight 120 ft.
Saving Throws
Dex +13, Wis +11, Cha +12
Languages
Auran
Challenge
18 (20,000 XP)
Air Form. Yan-C-Bin can enter a hostile creature’s space and stop there. He can move through a space as narrow as 1 inch wide without squeezing if air could pass through that space.
Empowered Attacks. Yan-C-Bin’s slam attacks are treated as magical for the purpose of bypassing resistance and immunity to nonmagical weapons.
Innate Spellcasting. Yan-C-Bin’s innate spellcasting ability is Charisma (spell save DC 20, +12 to hit with spell attacks). He can innately cast the following spells, requiring no material components:
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At will: gust of wind, invisibility, lightning bolt
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2/day each: chain lightning, cloudkill, haste
Legendary Resistance (3/Day). If Yan-C-Bin fails a saving throw, he can choose to succeed instead.
Magic Resistance. Yan-C-Bin has advantage on saving throws against spells and other magical effects.
Actions
Multiattack. Yan-C-Bin makes two slam attacks.
Slam. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 20 (3d8 + 7) force damage plus 10 (3d6) lightning damage.
Thundercrack (Recharges after a Short or Long Rest). Yan-C-Bin unleashes a terrible thundercrack in a 100-foot- radius sphere centered on himself. All other creatures in the area must succeed on a DC 24 Constitution saving throw or take 31 (9d6) thunder damage and be deafened for 1 minute. On a successful save, a creature takes half as much damage and is deafened until the start of Yan-C-Bin’s next turn.
Change Shape. Yan-C-Bin polymorphs into a Medium humanoid. While in polymorphed form, a swirling breeze surrounds him, his eyes are pale and cloudy, and he loses the Air Form trait. He can remain in polymorphed form for up to 1 hour. Reverting to his true form requires an action.
Summon Elementals (1/Day). Yan-C-Bin summons up to three air elementals and loses 30 hit points for each elemental he summons. Summoned elementals have maximum hit points, appear within 100 feet of Yan-C-Bin, and disappear if Yan-C-Bin is reduced to 0 hit points.
Legendary Actions
The yan-c-bin 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 yan-c-bin regains spent legendary actions at the start of its turn.
Peal of Thunder. Yan-C-Bin unleashes a peal of thunder that can be heard out to a range of 300 feet. Each creature within 30 feet of Yan-C-Bin takes 5 (1d10) thunder damage.
Teleport (Costs 2 Actions). Yan-C-Bin magically teleports up to 120 feet to an unoccupied space he can see. Anything Yan-C-Bin is wearing or carrying is teleported with him.
Suffocate (Costs 3 Actions). Yan-C-Bin steals the air of one breathing creature he can see within 60 feet of him. The target must make a DC 21 Constitution saving throw. On a failed save, the target drops to 0 hit points and is dying. On a successful save, the target can’t breathe or speak until the start of its next turn.