Your search for "polluted mire 265" revealed the following:
Polluted Mire (USG) from Urza's Saga, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Stephen Daniele Card Text:Polluted Mire comes into play tapped.T: Add B to your mana pool.Cycling 2 (You may pay 2 and discard this card...
Polluted Mire (CMA) from Commander Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Stephen Daniele Card Text:Polluted Mire enters the battlefield tapped.T: Add B to your mana pool.Cycling 2 (2, Discard this card: Draw a card.)