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.
Infernal Blood. The zombies' blood oozes with an infernal glow. A creature that touches the zombie or hits it with a melee attack while within 5 feet of it takes 2 (1d4) acid damage.
Slam. Melee Weapon Attack: +3 to hit, reach 5ft., one target.
Hit: 5 (1d6+2) acid damage
The revived husk of a former Tiefling