Mordenheim's Monster

Whenever the monster is subjected to Lightning damage, it regains a number of Hit Points equal to the Lightning damage dealt, and its Speed increases by 40 feet until the end of its next turn.

The monster can't shape-shift.

The monster has Advantage on saving throws against spells and other magical effects.

The monster makes two Slam attacks and uses Crush or Throw.

Melee Attack Roll: +10, reach 5 ft. Hit: 13 (2d6 + 6) Bludgeoning damage plus 7 (2d6) Lightning damage. If the target is a Medium or smaller creature, it has the Grappled condition (escape DC 18) from one of two hands.

Strength Saving Throw: DC 18, one creature Grappled by the monster. Failure: 13 (2d6 + 6) Bludgeoning damage plus 7 (2d6) Lightning damage, and the target has the Restrained condition. While Restrained, the target is suffocating.

The monster throws a creature Grappled by it to a space it can see within 30 feet of itself that isn't in the air. Dexterity Saving Throw: DC 18, the creature thrown and each creature in the destination space. Failure: 13 (2d6 + 6) Bludgeoning damage, and the target has the Prone condition. Success: Half damage only.

The monster spends 10 feet of movement to jump to a space within 40 feet that contains one or more Medium or smaller creatures. Dexterity Saving Throw: DC 18, each creature in the monster's destination space. Failure: 14 (4d6) Bludgeoning damage, and the target has the Prone condition. Failure or Success: The target moves to the nearest unoccupied space.