Powerful Build. The abomination counts as one size larger when determining its carrying capacity and how much it can push, drag, or lift. 

Immutable Form. The abomination is immune to any spell or effect that would alter its form. 

Ooze Form. The abomination can move through a space as narrow as one inch without squeezing. 

Multiattack. The abomination makes a number of attacks equal to half this spell's level (rounded down).

Slam. Melee Weapon Attack:  your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d8 + 4 + the spell's level bludgeoning damage.