Scarg, Sheppard of Man

Flying, Vigilance
When Scrag, Sheppard of Man attacks, you may exile target creature. It's owner may search their library for a nonbasic land, and put it onto the battlefield tapped.
When it is not your turn, Scarg, Sheppard of Man becomes a legendary land named The Last Refuge. It has "{t}: Add {r}{w} to your mana pool." It is no longer a creature