5e SRD:Ogre Zombie
From D&D Wiki
|This material is published under the OGL|
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.
Morningstar. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage.
See 5e SRD:Zombies.