Exsanguinator Cavalry is a rare Creature — Vampire Knight card from March of the Machine Commander (MOC), collector number 113. Current market price: $3.40, TCGplayer market prices via Scryfall.
Menace, lifelink Whenever a Knight you control deals combat damage to a player, put a +1/+1 counter on that creature and create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this token: Draw a card.")