The card just has to already be extremely valuable at higher PSA gradings due to high demand and limited supply
Before running it, however, youll have to choose a commander card
You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell. Basically, you can pick the best thing someone else owns and then cast it yourself
So, if your Commander is an expensive dork this will turn it into Primeval Titan and you can swing and ramp two lands
Most of these Pokemon received their own Mega Evolution cards in various sets from the XY era, and even though some Mega Evolutions are seen as budget options, every one of them featured incredibly detailed artwork
Pokmon at level 100 already know all the legal moves they can learn in Z-A, and you can freely edit their moveset directly in your game