Phyrexian Plaguelord is a rare Creature — Phyrexian Carrier card from Urza's Legacy (ULG), collector number 62. Current market price: $0.50 (foil $54.25), TCGplayer market prices via Scryfall.
{T}, Sacrifice this creature: Target creature gets -4/-4 until end of turn. Sacrifice a creature: Target creature gets -1/-1 until end of turn.