Chancellor of the Dross is a rare Creature — Phyrexian Vampire card from New Phyrexia (NPH), collector number 54. Current market price: $1.85 (foil $1.33), TCGplayer market prices via Scryfall.
You may reveal this card from your opening hand. If you do, at the beginning of the first upkeep, each opponent loses 3 life, then you gain life equal to the life lost this way. Flying, lifelink