Purraj of Urborg is a rare Legendary Creature — Cat Warrior card from Mirage (MIR), collector number 135. Current market price: $0.97, TCGplayer market prices via Scryfall.
Purraj has first strike as long as it's attacking. Whenever a player casts a black spell, you may pay {B}. If you do, put a +1/+1 counter on Purraj.