Mechanically, this takes the form of the manifest dread keyword action, which lets you choose one of two cards to put face down on the battlefield
The only way I see this getting played in cube is if someone decides to construct a backdraft cube, in which case I think this goes from unplayable to auto-include on humor alone
If you can get cards out of your graveyard some other way, she still makes a 2/2
On top of that, most decks in the format have inevitability, meaning that if you dont turn the corner, they will eventually kill you
Kiki-Jiki, Mirror Breaker Kiki-Jiki has haste, and it can create tokens with haste, too
If this one Pikachu is worth $10k, imagine the value a full set in mint condition could grab