The Vampire is a 5th-level spellcaster, Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The vampire has the following Sorcerer spells prepared:
Vampiric Drain. When the vampire uses Vampiric Touch the spell a range of 15ft. Hits with this attack have a chance to cause sanguinare vampiris (DC 14 Constitution saving throw). Sapping Sting. Successful attacks with this cantrip will also drain health equal to the necrotic damage, count as feeding and have a chance to cause sanguinare vampiris (DC 14 Constitution saving throw).
Offhand Attack. The vampires claws count as having light and finesse properties, it can make an off hand (+3) second attack when it attacks with its action. Steel Shortsword. Melee Weapon Attack. +6 to hit, reach 5 ft, one target. Hit:(1d6+4) piercing damage. Claws. Melee Weapon Attack: +6 to hit, reach 5 ft, one target. Hit: (1d4+5) slashing damage.
Vampires Bite. As a bonus action, any living creature within 5 feet that is grappled by the vampire, incapacitated, or restrained, takes (1d4) piercing damage plus (1d6) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vampire 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. Targets hit with this attack must also succeed on a Constitution saving throw (DC 14) or contract Sanguinare Vampiris.