I'm a casual MTG player and a couple of friends of mine and I split a two booster boxes of Mirrodin Besieged. We opened two copies of Tezzeret and put the cards right into protective sleeves.
Set Mirrodin Besieged Cost 2UB Color Multi Card Type Planeswalker — Tezzeret Rarity Mythic Rare Card Text
+1: Look at the top five cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
-1: Target artifact becomes a 5/5 artifact creature.
-4: Target player loses X life and you gain X life, where X is twice the number of artifacts you control.