Servo_Token says
Putting a card back in your opponent's hand isn't nearly as good as banishing it, but if it's a big enough card it may force them to waste an entire turn playing it again
With prerelease upon us, we no longer have to wait to experience this return to one of Magics most beloved planes
In the end though, Man-o'-War was seen as the better of the two since it could itself attack and kill an opponent, unlike Undo
This is an extremely powerful commander (and certainly a popular one, with over 15,000 decks), since she can cheat out very expensive creatures for free, with none of the drawbacks we see with similar creatures like Ilharg, the Raze-BoarIlharg, the Raze-Boar and Hans ErikssonHans Eriksson
Mystical Tutor Yeah, Mystical Tutor is a pretty big one