Opposition Agent (Extended Art) Finish:Foil At the beginning of your

At the beginning of your first main phase

where X is the number of card types among other nonland permanents you control

If you tap a permanent for mana

Sacrifice this land: Search your library for a Plains or Swamp card

Activate only if you control a Plains or an Island

Opposition Agent (Extended Art) Finish:Foil At the beginning of yourFlash You control your opponents while they're searching their libraries. While an opponent is searching their library, they exile each card they find. You may play those cards for as long as they remain exiled, and you may spend mana as though it were mana of any color to cast them.