Cerberus

Three heads, one duty: nothing escapes. The middle watches you; the left watches your courage; the right watches the door. It is bound to a threshold - a gate, a tomb, a border between places that should never mix - and it has not slept whole in centuries, because one head always keeps the watch. Bargains bore it; the only word it truly trusts is 'no'.

Bite: piercing, melee 5 ft, +3 to hit, 1d10+3, 1d10+3, 1d10+3. Triple Bite: piercing, 5 ft. Infernal Howl: fear, 30-ft cone, save Wis Mind; on fail frightened 1 round; cooldown 3 rounds.

Hellward: cannot be charmed while guarding a threshold. Keen Scent: +2 to track by smell. Senses: Night Vision (60 ft).