Vampire Spawn

The monster can climb difficult surfaces, including along ceilings, without needing to make an ability check.

The monster has these weaknesses:
Forbiddance. The monster can't enter a residence without an invitation from an occupant.
Running Water. The monster takes 20 Acid damage if it ends its turn in running water.
Stake to the Heart. The monster is destroyed if a weapon that deals Piercing damage is driven into the monster's heart while the monster has the Incapacitated condition.
Sunlight. The monster takes 20 Radiant damage if it starts its turn in sunlight. While in sunlight, it has Disadvantage on attack rolls and ability checks.

The monster makes two attacks and uses .

. . If the target is a Medium or smaller creature, it has the Grappled condition (escape DC ) from one of two claws.

Constitution Saving Throw: DC , one creature within feet that is willing or that has the Grappled, Incapacitated, or Restrained condition.
Failure: damage. The target's Hit Point maximum decreases by an amount equal to the Necrotic damage taken, and the vampire regains Hit Points equal to that amount.

The monster takes the Dash or Disengage action.