Chi-Yu, Scourge of Fire

Legendary Resistances (3 per day). If Chi-Yu fails a saving throw, it can choose to succeed it instead.

Dark Attacks. Chi-Yu's attacks are considered magical for the purpose of overcoming resistances and immunities.

Legendary Immortality. Chi-Yu cannot die. Instead, if reduced to 0 hit points, it gets sealed within the Firescourge Shrine until it is re-awakened.

Flaming Body. If any creature starts their turn within 5ft. of Chi-Yu, they take 13 (4d6) fire damage. In addition, any non-magical flammable objects held by the creature ignites.

Beads of Ruin. Any creature that starts their turn within 60ft. of Chi-Yu take an additional 3d6 fire damage from all of its attacks.

Water Susceptibility. For every gallon Chi-Yu comes into contact with, it takes 1 cold damage.

Multiattack. Chi-Yu can use Incinerate 3 times.

Incinerate. RangedWeapon Attack: +16 to hit, range 70/150 ft., 1 target. Hit: 35 (2d10 + 24) fire damage. In addition, Chi-Yu cannot suffer disadvantage on this attack roll if another creature is within 5ft. of it. In addition, any non-magical flammable objects held by the creature ignites.

Lava Plume (Recharge 5-6). Chi-Yu causes the ground around it to erupt in flames in a 30ft. radius. Any creature in range (other than Chi-Yu) must succeed a DC 23 Dexterity saving throw or take 16d6 fire damage or half as much on a success. In addition, any non-magical flammable objects held by the creature ignites.

Chi-Yu 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. Chi-Yu regains spent legendary actions at the start of its turn.

Ruination (Costs 3 Actions). Chi-Yu gathers destructive energy of souls lost in fires an expels that energy in a 5ft. wide 90ft. long line. Any creature in range must succeed a DC 23 Dexterity saving throw or take 70 necrotic damage or half as much on a success.

Bounce (Costs 2 Actions). Chi-Yu moves up to half its movement speed in a big jump. Any creature on the space that it occupies after the movement must succeed a DC 24 Dexterity saving throw or take 2d6 + 8 bludgeoning damage and fall prone.

Move. Chi-Yu moves up to its full movement speed.