It's an easy road to start adding To be transparent, my current leading idea is that a commander is a Game Changer if it creates play patterns or game constraints that are unfun and overwhelmingly powerful or if it qualifies by virtue of being a Game Changer in the other 99 cards of a Commander deck
Subsequently, the price of a Secret Lair Shadowborn Apostle may reach a new low
In game 2 he keeps a hand with Withered Wretch and no hand disruption
Mirabel can quest for a huge five lore, a whole 1/4th of what you need to win all at once
Sure, Roaming Ghostlights not Callous Dismissal, but it still looks to be a stellar threat and tempo swing all in one
Nephalia Academy Land If a spell or ability an opponent controls causes you to discard a card, you may reveal that card and put it on top of your library instead of putting it anywhere else