Repulse

Repusle is a five star card because it gives you card advantage and turn advantage. Your opponent basically waste his mana on a creature that you return to his hand at the end of turn delaying the creature's attack two turns because he can't play it during his endstep and you get to draw a card and untap your mana two seconds later for your untap step. Not to metion the card you draw during your draw phase. Ladies and Gentlemen, this is a K-Mart Special. Try putting a few of these in your deck and watch the magic work.

Actually a very good card that let's you bounce a creature + cantrip. The cost is perfect too...