Corpse Lurker Nest

Mobile Nest. The Corpse Lurker Nest releases a swarm of Corpse Lurkers at the end of each of its turns.

Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Multiattack. The Nest makes two claw attacks. For each of these attacks that reduces a creature to 0 hit points, the Nest can make an additional claw attack.

Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage, plus 2 (1d4) necrotic damage.

Burst. The Nest explodes and is destroyed. Each creature within 5 feet of it must make a DC 12 Constitution saving throw, taking 14 (4d6) poison damage on a failed save, or half as much damage on a successful one. Upon bursting, two swarms of Corpse Lurkers erupt from the body of the zombie.