To me, Pokmon are cute creatures
Afterlife Insurance can be cast for white mana, but thanks to Rainbows color identity, I can still play it in the deck even though its technically white and black
That said, your success with a given deck comes down to how its constructed and how you play it
In Standard, the Metal / Water Energy requirements mean that you are pretty limited in what you can play ADP with
Each mini tin is designed with eye-catching Prismatic Evolutions artwork and provides players and collectors with a fun way to expand their Pokmon card collection
A deck list that has more cards that fix mana such as Manamorphose and Wild Cantor might support it's inclusion more, but even when I ran those cards, Slithermuse was still often difficult to cast