Sticky. This creature can move along vertical surfaces and ceilings.

Slime Trail. During its movement it can choose to leave a thick slime trail, causing spaces it moves though to become difficult terrain.

Head Butt. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 3) bludgeoning damage.

Curl Up. The snail can hide in its shell, increasing its AC by 4; It can come out of its shell as a bonus action.