Vampire Lacerator

Aggressive. As a bonus action, the lacerator can move up to its speed toward a hostile creature that it can see.

Blood Frenzy. The lacerator has advantage on melee attack rolls against any creature that doesn't have all its hit points.

Multiattack. The lacerator makes two shortsword attacks. If they both hit, the target is grappled (escape DC 13) and the lacerator can make a bite attack as a bonus action.

Shortsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (1d6 + 3) slashing damage.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one willing creature, or a creature that is grappled by the lacerator, incapacitated, or restrained. Hit: (1d6 + 3) piercing damage plus (2d6)necrotic damage. The target's hit point maximum is reduced by an amount equal to the necrotic damage taken, and the lacerator regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.