Your search for "Thrull Parasite 81/249" revealed the following:
Thrull Parasite (Foil) (GTC) from Gatecrash, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Clint Cearley Card Text:Extort (Whenever you cast a spell, you may pay (W/B). If you do, each opponent loses 1 life and you gain...
Thrull Parasite (GTC) from Gatecrash, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Clint Cearley Card Text:Extort (Whenever you cast a spell, you may pay (W/B). If you do, each opponent loses 1 life and you gain that...
Thrull Parasite - GTC Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Clint Cearley Card Text:Extort (Whenever you cast a spell, you may pay (W/B). If you do, each opponent loses 1 life...