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({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {W}.)

{T}: Add {C}. {3}{G}{W}, {T}, Tap two untapped creatures you control, Sacrifice Grove of the Guardian: Create an 8/8 green and white Elemental crea...

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {U}.)

({T}: Add {B} or {G}.) As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {R}.)

({T}: Add {W}.)

Golgari Guildgate enters the battlefield tapped. {T}: Add {B} or {G}.

({T}: Add {B}.)

({T}: Add {U}.)

({T}: Add {G}.)

({T}: Add {G}.)

Izzet Guildgate enters the battlefield tapped. {T}: Add {U} or {R}.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {B}.)

({T}: Add {W}.)

({T}: Add {G}.)