Planechase

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

(Seat of the Synod isn't a spell.) {T}: Add {U}.

Shivan Oasis enters the battlefield tapped. {T}: Add {R} or {G}.

{T}: Add {C}. {2}{R}{W}, {T}: Target creature gains double strike until end of turn.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

(Tree of Tales isn't a spell.) {T}: Add {G}.

(Vault of Whispers isn't a spell.) {T}: Add {B}.