I believe it was made to work with Bound in Silence, which was a Rebel (the card introduced the tribal supertype)
On the other side of the deck, Weedle lets you bring more Weedle to the field, giving you a bit of insurance while you set up, while Kakuna lets you paralyze opponents and Beedrill disrupts your opponent's setup by discarding their energy
Pokemon cards serve as the Pokemon that you will lead in battles
I had a blast messing around with Magnezone / Raikou and Lucario-EX / Hammers last year before inevitably settling on Night March for the remainder of the season
You'll usually only attack with one or two creatures, so Silent Arbiter can give you a few turns of freedom to play the game your way
For instance, this Island shows off Teferi's home plane of Dominaria in the showcase frame, and now you can cast all your Teferi spells with style