15 (natural armor)
85 (9d12+27)
walk 20 ft., Climb 10 ft.
darkvision 120 ft.
4
As an action, the battle snail can retract into its shell. As long as it is retracted into its shell, it gains a +4 bonus to AC, it is prone, its speed is 0 and can't increase, it has disadvantage on Dexterity saving throws, it can't take reactions, and the only action it can take is a bonus action to emerge from its shell.
As a move action, the battle snail can move double its normal speed in the area covered by its slippery slime.
If the battle snail moves at least 20 feet straight toward a creature and then hits it with a bite attack on the same turn, that target must succeed on a DC 14 Strength saving throw or be knocked prone. If the target is prone, the battle snail can make one trample attack against it as a bonus action.
Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (1d10 + 6) piercing damage.
Melee Weapon Attack: +8 to hit, reach 5 ft., one prone creature. Hit: 22 (3d10 + 6) bludgeoning damage.
The battle snail spits slippery slime in a 40 feet line. Each creature in that line must make a DC 13 Dexterity saving throw. On a failed save, the target creature becomes prone.