Blood Tyrant is a rare Creature — Vampire card from Conflux (CON), collector number 99. Current market price: $0.43 (foil $0.39), TCGplayer market prices via Scryfall.
Flying, trample At the beginning of your upkeep, each player loses 1 life. Put a +1/+1 counter on this creature for each 1 life lost this way. Whenever a player loses the game, put five +1/+1 counters on this creature.