full art mew pokemon card EX #003 EXTENDED – Raycardza shuffle your deck. 2021 Pokemon Sword & Shield

You could target a bothersome creature in play or deal a little extra damage to your opponent

The Fire Crystal just does too little for far too much mana, so just leave it in the sideboard

Beyond just being good on its own, Nuka-Cola Vending Machine gets even better alongside Commander staples

Virtually any green deck is improved by playing both of these cards, and since the lands they retrieve come in untapped, theyre much more welcome than many other mana ramp spells during later turns of the game

My best guess was that seven is one of the more common numbers for card games where you draw cards and perhaps it won out because it was what Richard Garfield thought people would assume to draw