Giant Grick

Camouflage. The grick has advantage on Stealth checks made to hide in rocky terrain.

Spider Climb. The grick can use its climb speed even on difficult surfaces and upside down on ceilings.

Tentacles. Melee Weapon Attack: +8 to hit, reach 20 ft., one or two targets. Hit: 23 (4d8 + 5) bludgeoning damage and if the target is a creature it makes a DC 16 Strength saving throw. On a failure the creature is pulled to within 5 feet of the grick and grappled (escape DC 16). Until the grapple ends the creature is restrained. The grick can grapple up to two Medium or smaller creatures or one Large creature.

Beak. Melee Weapon Attack: +8 to hit, reach 5 ft., one creature grappled by the grick. Hit: 14 (2d8 + 5) piercing damage.