tarkir dragonstorm play booster box card list Magic The Gathering - As powerful dragonstorms spiral Tarkir into chaos and wild dragons darken the skies Tarkir: Dragonstorm - Collector Booster

While that would have been cute for a regular EX, its extremely risky for a Mega Evolution, losing which instantly ends the game with you on the losing side

In a deck with a lot of energy counter generation, Rex doesn't have to worry about attacking to use its effect, letting you give it a ton of different abilities

As a card, it introduced a deceptively simple but incredibly powerful effecttemporarily banishing a card from your deck only to retrieve it laterwhich would go on to become a staple mechanic in countless strategies

Thus came the sets Planechase in 2009, Archenemy in 2010 and Commander in 2011, all released during the American summer of the respective years and with the same purpose: to test the response of these casual players