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Beyond that, you can obtain three free packs each week by winning 15 games and three more each Friday just by logging in once a week

Artifacts like Urzas Sylex, Nevinyrrals Disk, or Oblivion Stone warp opponents playstyles around the threat of mutually assured destruction and certainly have their place in Commander, and in the case of Sylex, tossing an extra two mana during activation to Call the Gatewatch might be just what you need to break parity following extinction

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The removal can be replaced without too much trouble by Cut and Harnessed Lightning (exile will be less important without all those recursive Zombies), and thats without even considering what Ixalan brings us