Sea Foundry
Land-Island Mountain (Rare)

(Tap: Add U or R to your mana pool.)

Sea Foundry enters the battlefield tapped unless you pay U.

U, Tap, Sacrifice Sea Foundry: Return target creature you control to its owner's hand.

1, Tap: Target land becomes a 2/2 red Elemental creature until end of turn. It's still a land.

Therese Chan