In other formats, paying some amount of life as an additional cost can be quite the drawback, Death's ShadowDeath's Shadow aside, but in EDH we have access to a lot of ways to turn this into an added benefit
Toothy, Imaginary Friend and Pir, Imaginative Rascal fit right into the theme as well (although Pir is a Human and cant be mutated)
Pokemon Card Strategy: As far as strategy goes, I really like Shiftry's Poke-Body it can really affect your opponent's play if they base a lot of their moves off of coin flips, if your opponent has a deck like this I would Shiftry into play as soon as possible
This artwork combined with the unique typing and Tera form, however, make this card highly collectible.
Most secondary Commander products, like the Zendikar Rising or Kaldheim decks, consist of only two decks