mtg beholder cards Commander! : r/custommagic Fling deals damage equal to the sacrificed creatures power to any target. BEHOLDER - 2 CARD SET

Depending on your deck, you might also want to look at Clever Concealment, Flawless Maneuver and Cosmic Intervention the latter of which is a lot of fun with fetchlands and mass land destruction, or board wipes when you run a lot of strong EtB effects

The Magic: The Gathering Tarkir Dragonstorm Play Booster Box includes 30 Play Boosters, each containing 14 cards plus a Token or Art card

A lot of boxes look really cool and are super solid, but theyll open up and let all the cards out as soon as you toss them in your bag

It can also happen if a sorcery effect creates two 1/1 Soldier tokens, so thats two permanents entering the battlefield at the same time