Keen Hearing and Smell. The armored grub eater has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Multiattack. The armored grub eater makes three attacks: one with its tongue, one with its claws, and one with its tail.

Tongue. Melee Weapon Attack: +6 to hit, reach 20 ft., one target. Hit: 8 (1d8 + 3) bludgeoning damage, and the target is grappled (escape DC 14) if it is a Large or smaller creature. Until the grapple ends, the armored grub eater can’t use its tongue on another target.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) slashing damage.

Scaly Defense. The armored grub eater rolls up in a defensive stance. Until it emerges, it gains a +4 bonus to AC and has advantage on Strength and Constitution saving throws. While in its shell, the armored grub eater is [status]prone[/status], 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.

Tail. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 21 (1d6 + 4) bludgeoning damage, and the target must succeed on a DC 13 Constitution saving throw or be stunned until the start of the armored grub eater’s next turn.