Consider how strong your Planeswalker card is against the decks you expect to play against, as well as how useful itll be if you only get to use one of its abilities before its removed
The Secret Card Aftermath comes from a storied lineage of Magic mechanics that, though they don't say so explicitly, secretly draw you a card
Furthermore, there is a bonus damage modifier (x1.5) applied if your Pokmon uses a move of one of its types
This unique mechanic allows them to use the moves and abilities of their previous stage (the Pokmon which has been Leveled-Up) in addition to their own, something that opens up many new strategies
This is where your create-your-own Pokmon card idea comes to life a real card format, your real subject, your real design choices
Weaknesses: Can be removed by flipping heads or using healing cards