Oceanus the Living Tide

Oceanus costs X less to cast, where X is the
number of cards you've scried this turn.
You may cast land cards from your graveyard.
Whenever you cast a land, you may look at the top
3 cards of your library. You may put any number
of them into your graveyard and the rest back on
top in any order.
Rebirth - 3 {u}{b}{g}, 5