Powerful effects such as these are balanced by the fact that you may only play one supporter card each turn , and the player going first may not play one on their first turn
However, the Master Ball Mirror variant systemreturning from the successful Pokemon 151 implementationcreates additional collecting layers with certain Master Ball Eeveelutions commanding significant premiums
Matoya, Archon Elder Turning your draw smoothing into card drawing too, Matoya is pretty neat that way and fits in a number of casual and Commander decks, but dont expect to see this old lady haunting any other tables
Rakdos is a bit different in that he can be a one-sided board wipe, but there arent that many other Devils, Demons, or Imps worth playing, and hes risky to play anyway since you could end up wiping your board and not affecting your opponent at all, so he never really took off
And heres the thing: doing that is boring