Boxing Day

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

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

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

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

At the beginning of the end step, if you control no artifacts, sacrifice Glimmervoid. {T}: Add one mana of any color.

Cloudpost enters the battlefield tapped. {T}: Add {C} for each Locus on the battlefield.

(Ancient Den isn't a spell.) {T}: Add {W}.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {B}.)

({T}: Add {B}.)