Undead Resistance. For Each attack against this creature a D6 must be rolled as to find where the attack hits, a 1 will hit the left leg, a 2 will hit the right leg, a 3 will hit the chest, a 4 will hit left arm, a 5 will hit the right arm and a 6 will kill the rotter as it strikes the head. If the damage against the the limb is above a total of 8 the limb will be removed. If the total damage to the body is above 10 then the lower half of the body will be removed.

Bite. Melee Weapon Attack: +0 to hit, reach 5 ft., one target. Hit: 4 (1d6+3) Piercing damage. However if the attack does succeed the person attacked must succeed on a DC 18 constitution saving throw or suffer from the affliction. If the constitution saving throw fails then the player has 20 in game minutes to remove the LIMB if they are bit by a natural 20 then they are going to die in 1d20 hours as this will strike the neck or torso of the character else it will hit an arm or a leg the DM chooses.

These zombies can dash as a bonus action.