Clearwater Fortress

{t}: Add {w}, {u}, or {g}.
{t}, {w}{u}{g}: Scry 1, then reveal the top card
of your library. If it's a creature, shuffle it
into your Shipyard. If there are five or more
cards in your Shipyard, you may Renovate 1
(Put the top card of your Shipyard onto the battlefield tapped under your control ).