Keep an eye on recent sales and trades to understand how much Japanese Pokemon cards are worth
Discarding your entire hand also means that you will inevitably have to discard cards that you don't necessarily want to discard as opposed to other cards which simply let you pick and choose
This way, you can get the best price for the cards and get rid of several cards at once
You can pair it with Faithless Looting or other draw-discard effects to help fuel its flashback side, which makes it a natural fit in Izzet spell recursion archetypes
The game is seemingly already getting its first expansion for the MEGA block, too, as a new trademark from Game Freak sets the stage for it
In the 1993 chapter of my History of Vintage project, we saw this with Rudy Edwards Wild Era Magic deck, which is just Taiga, Kird Apes, and Lightning Bolts