Flusterstorm [Commander 2011] Rise of the Eldrazi the Stronghold serves as the

the Stronghold serves as the gathering place for the Cabal as their dark influence spreads from Urborg

Set: Conspiracy: Take the Crown Type: Artifact Rarity: Rare Cost: {3} Whenever a player plays a land

Set: Vanguard Series Type: Vanguard Rarity: Rare If a basic land you control is tapped for mana

But I doubt it

Flusterstorm [Commander 2011] Rise of the Eldrazi the Stronghold serves as theSet: Commander 2011 Type: Instant Rarity: Rare Cost: {U} Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)