I have always loved this card. Way back when I first started playing magic, i traded for one of these and was just so excited. 5/6 Flying for 6 is totally playable, and it was one of the biggest guys around then. Shrugs off Serra Angel and Sengir Vampire, kills Shivan Dragon and lives to tell the tale. Great finisher for blue decks - either if you're going the control route with white or combining with green for mana acceleration to get him out earlier (which was my preference - I'd hope to bring him out on turn 3 with Sol Ring and Birds of Paradise). Slap an Unstable Mutation on him and swing away.