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.

Acid Absorption. Whenever the creature is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt.

Corrosive Form. A creature that touches the creature or hits it with a melee attack while within 5 feet of it takes 4 (1d8) acid damage. Any nonmagical weapon made of metal or wood that hits the creature corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops to −5, the weapon is destroyed. Nonmagical ammunition made of metal or wood that hits the creature is destroyed after dealing damage. The creature can eat through 2-inch-thick, nonmagical wood or metal in 1 round.

Ooze explosion. Once it dies it explodes shooting acid and oozing everywhere. The ooze will stay stuck to you for a full day unless you roll a 10 or higher instantly.

Slam. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage

Deadly Leap. If the creature jumps at least 15 feet as part of its movement, it can then use this action to land on its feet in a space that contains one or more other creatures. Each of those creatures must succeed on a DC ## Strength or Dexterity saving throw (target's choice) or be knocked prone and take (##d6 + STRmod) bludgeoning damage plus (##d6 + STRmod) slashing damage. On a successful save, the creature takes only half the damage, isn't knocked prone, and is pushed 5 feet out of the creature's space into an unoccupied space of the creature's choice. If no unoccupied space is within range, the creature instead falls prone in the creature's space.

Rampage. When the creature reduces a creature to 0 hit points with a melee attack on its turn, the hyena can take a bonus action to move up to half its speed and make a bite attack.

acid spit. Its long range

Consume Life. As a bonus action, the creature can target one creature it can see within 5 feet of it that has 0 hit points and is still alive. The target must succeed on a DC ## Constitution saving throw against this magic or die. If the target dies, the creature regains (##d6) hit points.

If there is meat or living aniimals near, it will hunt. If there are other undead, it will aid them in combat.