Remember your cube is a limited environment too, not just a giant collection of cards
All you had to do to get the code was sign into your Twitch Prime account, check the 'Loot' section, click on 'claim', and it would generate a code for you to redeem directly in the Arena client
Actually, there was one really unfortunate example It was called Lysandre's Trump Card. People came up with a way to really exploit that card, to ruin the game and make it take a very long time
Campfire Fans of impossible commanders like Phage the Untouchable or Haakon, Stromgald Scourge are stoked to get another tool to make their awkward commander work, but I think its got a lot more applications and deserves a slot in a lot more Commander decks
As you can imagine, PokStop will be mainly played in decks that can afford to mill cards and are willing to gamble a little bit to achieve more speed (e.g
Legendary Creature - Goblin Rogue Mari, the Killing Quill Whenever a creature an opponent controls dies, exile it with a hit counter on it