As Port Town enters the battlefield, you may reveal a Plains or Island card from your hand. If you don't, Port Town enters the battlefield tapped. {T}: Add {W} or {U}.
As Game Trail enters the battlefield, you may reveal a Mountain or Forest card from your hand. If you don't, Game Trail enters the battlefield tapped. {T}: Add {R} or {G}.
As Fortified Village enters the battlefield, you may reveal a Forest or Plains card from your hand. If you don't, Fortified Village enters the battlefield tapped. {T}: Add {G} or {W}.
As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped. {T}: Add {B} or {R}.
({T}: Add {R}.) Derelict Amphitheatre enters the battlefield tapped. {R}, {T}, Reveal a red card from your hand: Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)
As Choked Estuary enters the battlefield, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters the battlefield tapped. {T}: Add {U} or {B}.
({T}: Add {W}.) Bustling Docks enters the battlefield tapped. {W}, {T}, Reveal a white card from your hand: Target creature gets +1/+0 until end of turn.