Stone Camouflage. The timbermaw has advantage on Dexterity (Stealth) checks made to hide in rocky terrain.
Multiattack. The timbermaw makes one attack with its tentacles. If that attack hits, the timbermaw can make one beak attack against the same target.
Tentacles. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:9 (2d6 + 2) slashing damage.
Beak. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:5 (1d6 + 2) piercing damage.
Timbermaws dwell in the hollow trunks of strange floating trees, emerging with deadly speed when prey wanders near. (The grick statistics can represent a timbermaw, adjusting its stone camouflage trait to hide it in the woodlands.)