Hold Breath. While out of water, the octopus can hold its breath for 1 hour.
Water Breathing. The octopus can breathe only underwater.
Tentacles. Melee Weapon Attack: +5 to hit, reach 15 ft., one target Hit:7 (1d8 + 3) bludgeoning damage.
Spore servants are dead creatures reanimated by the magical spores of a myconid leader. The final act of the myconid leader in Seagrow Caves before lapsing into its current comatose state was creating a spore servant from a dead giant octopus to protect the caves while the leader could not. Unlike a living octopus, this guardian has only basic control over its tentacles. Rather than coiling around intruders to immobilize them, the spore servant simply bludgeons them.