Mummy, Peat

Bog Melt. A creature afflicted with bog melt curse can't regain hp and its hp max is reduced by 7 (2d6) for every 24 hrs that elapse. Also when cursed creature starts its turn within 30' of a creature it can see it has a 50% chance of going into a rage until end of its turn. While raged cursed creature must attack nearest creature. If no creature is near enough to move to and attack cursed creature stalks off in a random direction seeking a target for its rage. Curse lasts until lifted by remove curse spell or similar. If curse reduces creature's hp max to 0 creature dies and body dissolves into viscous puddle of goo. Carnivorous creatures with an Int of 3 or lower that can see or smell the goo must make DC 15 Wis save or drink the goo. After 1 min creature's Bite Claw or Slam attack becomes infused with the curse and any creature hit by that attack: DC 15 Con save or be cursed with bog melt.

Noxious Slurry. A creature that hits the peat mummy with melee weapon attack that deals slashing damage while within 5 ft. of it: poisoned until the end of its next turn as noxious fumes and liquefied flesh spray from the wound (DC 15 Con negates).

Undead Nature. Doesn't require air food drink or sleep.