Lay of the Land

Target Mountain you control becomes a 5/7 Elemental creature with Reach. It is still a Mountain.
Target Island you control becomes a 5/7 Bird Elemental creature with Flying. It is still an Island.
Targeted Permanents fight each other. (Each creature deals damage equal to its power to the other.)
Flashback {6}{u/r}{u/r} (You may cast this card from your graveyard for its flashback cost. Then exile it.)