Urza's Command can drop the power of other player's dorks out of nowhere, make a Powerstone, make a tapped Construct token to win the game, and then scry and draw, so I think that the Construct and scry and card draw are the default here, and that's pretty good for four mana instant speed
It cant attack or block unless you have another creature with power 4 or higher on the battlefield, but that could just be your commander in many decks
Whenever another creature you control with flying enters, this creature gets +1/+1 until end of turn
Graf Mole turns every Clue you sacrifice into a chunk of lifegain, helping you stay healthy while drawing cards
Genji Glove, being colorless, opens up the effect to literally any deck
(Editor's Note: The decklists below pull the newest printing of each card automatically from our card database, including printings which are not in this product