Blight Zombie

Blighted. Any creature within five feet of the zombie must make a DC 10 constitution saving throw or be infected with blight. Any creature infected with blight has their hit point maximum reduced by one if they fail another save with a DC equal to 10 + the number of days infected after each long rest. If they fail by 5 or more they are reduced further by 1d4 + 1 hit points. If they die or their hit point maximum is reduced to 0 then they turn into a zombie with half its hit points. The disease ends if the target survives for 7 long rests or has Lesser restoration or similar magic casted using a spell slot of 4th level or higher, 3rd level slot of cast before a rest.

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.

Claw. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 2 (1d4) slashing damage. Target must make a DC 11 Constitution saving throw or be infected with blight.