Coming up short in either area can harshly limit the power ceiling of a typal deck, which is why aficionados of these under-used creature types are always bullish about any new tech they spot during set previews
This is supposed to be a game about Pokmon battles, and one player still being able to play the game while not having a Pokmon in play is quite the strange concept
Prowling Serpopard Prowling Serpopard makes your creature spells uncounterable, besides being a 4/3 for 3 mana
Card not found on the other hand doesnt really have enough Aetherborn around it to really make it worthwhile
This is where regular Pokmon League events, prereleases, League Challenges, and competitive tournaments take place
As one could probably guess, thatll most often be a game-time decision, but seasoned Magic players no doubt have learned that options when casting a spell are always welcome (insert joke about how everything is just a variation on Kicker here)