This is a very powerful instant. Essentially it not only steals an opponent's creature, but it also steals their entire turn. Play this the moment they play their first creature to jack it, and then if they're dumb enough to play another creature, you get that one, too. And the one after that, and the one after that, etc. until the end of their turn. But because most of us that play Magic are fairly smart, you'll only get one creature, and they won't want to play any other creature for that entire turn. I really like this card in blue control decks.
-- By Elder Hansen from Monroe, LA USA on July 31, 2009
Good card. Would give it a 5 if it didnt cost so much mana. I guess by the time an opponent gets creature into play that is worth using this on you WILL have six mana, but meh.