Amorphous. The Boom Slime can move through a space as narrow as 1 inch wide without squeezing.
False Appearance. While the Boom Slime remains motionless, it is indistinguishable from an oily pool or wet rock.
Destruction Acceleration. If the Boom Slime is reduced to 0 hit points as a result of taking fire or lightning damage it automatically takes its Self-Destruct action.
Pseudopod. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 9 (3d6 + 1) bludgeoning damage.
Self-Destruct. The Boom Slime reduces itself to 0 hit points. All creatures within 10 feet of this creature must make a DC 12 Dexterity saving throw or take 3d6 fire damage on a failed save, or half as much on a successful one. Any creature within 5 feet of this creature when it takes this action has disadvantage on the saving throw.