Your deck should not just be a collection of powerful Pokmon
Archmage of Runes solves this nicely, allowing you to just play ritual style cards to generate increasing amounts of mana while having enough remaining cards to keep playing them
Largely centered in Black cards like Grave Pact, Archfiend of Depravity, or Phyrexian Obliterator, we also have Karmic Justice in White, Rishadan Cutpurse in Blue, Crack the Earth in Red and Druid of Purification in Green
And then Doctor Who comes along and shatters that rule with the Paradox Power commander deck
At the time of writing, there are 226 unique cards (plus around 14 additional "promo" cards) available, split across three choices of pack (one each themed after Charizard, Mewtwo, and Pikachu) and all together making up the game's first expansion
Yidaro, Wandering Monster As a commander, Yidaro, Wandering Monster isnt as great because you can't cycle it from the command zone, but it's a very neat addition as a part of the deck because it's a free cantrip that cant be countered