While a 5/5 indestructible beater sounds like a reasonable threat at first glance, considering that Historic will likely heavily feature Teferi, Hero of Dominaria, Teferi, Time Raveler, and Oko, Thief of Crownsall of which incidentally answer a 5/5 indestructible Darksteel ReactorI'm not sure the plan will actually be competitive
As Aminatou's third ability resolves, you choose a direction, then each player takes control of their new permanents at the same time
Its the most efficient way to selfmill and the more cards we flip in early turns of the game, the bigger the chances for finding the duo of Narcomoeba + Prized Amalgam or Silversmote Ghoul + Creeping Chill are
If you want to level up your gameplay experience and get an upper hand on your mighty foes, this list is for you
But yes, this is all incredibly moot if no one can actually buy the stuff
Because I sure didn't