If a double-faced card is exiled this way, it will return with its front face up, no matter which face was up when it left the battlefield
And in EDH, you might even be able to use his -4 for a bit of a boardwipe
Fountainport As a colorless utility land, you could do worse than Fountainport, which essentially turns all tokens into Clues
Wrenn hits the table early, starts pinging X/1s out of existence , and somehow makes sure you never miss a land drop again
Play a few games of Jumpstart , and you might find grave-bound Gixians using Urza's powerstones, or Mishra's mighty machines teaming up with Titania's Argothian defenses
Then she has a hasted 1/5 body for just three mana with the ability to tap with three and then have her fight one of yours with another dork, and if you fight yours, it's just one mana to fight