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.

Horde. Many Medium sized creatures make up the zombie horde, which can occupy another creature’s space and vice versa. If the zombie horde is dropped to 0 hit points, it becomes 7 (2d6) zombies, which lose all the features of the zombie horde, but continue to attack normally.

Turn Immunity. The zombie horde is immune to effects that turn undead.

Multiattack. The zombie horde makes one bite and one claw attack.

Bite. Melee Weapon Attack: +9 to hit, reach 0 ft., one target inside the horde’s space. Hit: 46 (12d6 + 4) piercing damage. If the zombie horde’s bite reduces a creature to 0, it is ripped to pieces and can only be resurrected with a true resurrection or wish spell.

Claws. Melee Weapon Attack: +9 to hit, reach 0 ft., one target inside the horde’s space. Hit: 58 (12d8 + 4) slashing damage. If the zombie horde’s Rend attack reduces a creature to 0, it is ripped to pieces and can only be resurrected with a true resurrection or wish spell.