Similar to the Partner rule, instead of requiring Partner on both cards for two Commanders, you need a Doctor and Companion
Have it really be a Pokemon 20 celebration and have them have a tribute to all 20 years of the anime with references and whatnot, there were very few and the only good ones were after the movie ended and it lasted like 10 seconds going through every saga
Cards like Ball Lightning , Mana Vortex , Maze of Ith , Elves of Deep Shadow or Eater of the Dead are beloved in different formats such as Old School and Commander
So, instead of relying on a single, incredibly strong threat, you'll play an average-sized, consistent threat that returns to play turn after turn
To do just that, thankfully, Magic: the Gathering features plenty of snow lands and creatures to fill your deck with
If you don't put a card into your hand this way, create a Food token