Invasion

({T}: Add {B}.)

({T}: Add {U}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {G}.)

({T}: Add {R}.)

Salt Marsh enters the battlefield tapped. {T}: Add {U} or {B}.

Multicolored spells cost up to {2} less to cast.

({T}: Add {R}.)

Coastal Tower enters the battlefield tapped. {T}: Add {W} or {U}.

({T}: Add {W}.)

{T}: Add {G} or {W}.

{1}, Sacrifice Rith's Attendant: Add {R}{G}{W}.

({T}: Add {R}.)

({T}: Add {W}.)

({T}: Add {R}.)

({T}: Add {W}.)

({T}: Add {B}.)

({T}: Add {W}.)

{T}: Add {C}. {4}{R}, {T}, Sacrifice a creature: Keldon Necropolis deals 2 damage to any target.

Creatures with power 1 or less don't untap during their controllers' untap steps.

{1}, {T}, Sacrifice Chromatic Sphere: Add one mana of any color. Draw a card.

Ancient Spring enters the battlefield tapped. {T}: Add {U}. {T}, Sacrifice Ancient Spring: Add {W}{B}.

Flying {T}: Add one mana of any color.