Gisa and Geralf One of the more popular zombie commanders, Gisa and Geralf combine their powers in a card that grants constant access to the shambling corpses left in our graveyard
Realistically, this will only be a problem for a handful of packs or boxes, and replacing affected cards should be fairly easy
I have seen Rhystic Study warp more Commander games than any other card, and it is exactly the kind of card that the Game Changers list exists to address
Except in some very unusual cases, the card each player reveals is the one they'll draw
Not having to discard for drawing, as well as having higher toughness makes this rogue a little less dependent on external factors to remain useful, and I personally appreciate that
Expect to see a bunch of these while climbing the Ranked mode ladder