Even if no additional catalysts were to emerge, as the generation for whom Pokmon holds the most cultural resonance (mostly younger millennials) advances in their careers and comes of age financially, one could easily imagine an increasing amount of capital chasing a limited number of Pokmon grail cards
However you can push through by: Using fast aggro to bash your way through the early countermagic and put your opponent on an undeniable clock
Tymna is great in just about any EDH deck with a generic strategy that Orzhov supports, including aristocrats and lifegain
Development: Not Problematic It took us a little time to adjust to the power level of the mechanic when we first created it, but now that we understand the nature of what a proper flashback cost should look like, it's an easy mechanic to develop
If you are rocking a green deck that's up against a blue spell deck, this is a tremendous side-bar card to have on hand
Any "as [this creature] enters" or "[this creature] enters with" abilities of the copied creature will also work.