Warhorse Zombie (5e Creature)
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Large undead, neutral evil
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.
Hooves. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.
Dead warhorses, animated by despicable magic. They are often used as mounts by necromancers and greater undead.
Undead Nature. A warhorse zombie doesn't require air, food, drink, or sleep.