Chill Bill

Explosive Master. Chill Bill cannot be harmed by his own explosives.

Multiattack. Chill Bill makes three attacks. Two with Point Blank Ice BOMB and one with Freeze Ray

Point Blank Ice BOMB. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 17 (2d12 + 5) cold damage. 

Freeze Ray. RangedWeapon Attack: +8 to hit, range 30/60 ft., one target. Hit: 15 (2d10 + 5) cold damage and the target must succeed on a DC 16 Constitution Saving Throw or be restrained. They can repeat this save as an action on their turn.

Ice Kamikaze. Special ability: All creatures within 30 feet of Chill Bill must make a DC 18 Dexterity Saving Throw or take 6d10 cold damage and be restrained. After this attack, Chill Bill takes one quarter of the damage he dealt.

Freeze Stomp. Everything within 10 feet of Chill Bill becomes difficult terrain.

Chill Bill has 2 legendary actions. He can never regain spent legendary actions. His only legendary action requires a full action to preform.

Ice Kamikaze. Special ability: All creatures within 30 feet of Chill Bill must make a DC 18 Dexterity Saving Throw or take 1d100 cold damage and be restrained. After this attack, Chill Bill takes one quarter of the damage he dealt.