Especially because Artifact decks will tend to produce a lot cardboard for this to tap to generate mana
Add 1 "Doll Chimera" to your hand
Melffy Catty X EARTH Level 2 [ Beast / Effect ] ATK 200 DEF 200 If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can add 1 Beast monster from your Deck to your hand, except "Melffy Catty"
If you wanted to lean into the flavor, like I wanted to, you could include some more eerie cards, and of course, you can add some enchantress staples, such as Sythis, Harvests Hand, Setessan Champion, and Mesa Enchantress to draw cards
Then drop him late and turn your little bloodsuckers into a terrifying army thats how you build the best Vampire Commander deck