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Simic Growth Chamber

Simic Growth Chamber enters the battlefield tapped.
When Simic Growth Chamber enters the battlefield, return a land you control to its owner’s hand.
{T}: Add {G}{U}.

Rarity : Common
Types : Land
Artist : John Avon
Cost converted to mana : 0

Rulings

15 April 2013
If this land enters the battlefield and you control no other lands, its ability will force you to return it to your hand.

Rupture Spire

Rupture Spire enters the battlefield tapped. When Rupture Spire enters the battlefield, sacrifice it unless you pay {1}. {T}: Add one mana of any color.

Forest

({T}: Add {G}.)