The idea is that you can force some tricky blocking situations under the threat to your opponents that you might swap them around
the soaring Ampharos, a Pokemon which is used to light up the Olivine City lighthouse
You can use these reserve cards to replace your active Pokmon once it is defeated, similar to how combat works in the video games
Fairy Pokmon apparently have tricks that will make my opponents Pokmons attacks less effective (Hocus Pinkus anyone?), Water Pokmon are known for moving Pokmon around on the other team (whatever that means), and Fighting Pokmon can flip coins for combination hits even though literally every popular Fighting Pokmon doesnt have a coin flip attack
Milling a permanent is descending, cards in the graveyard are ripe for collecting evidence or foraging its designed well enough to play in its Standard and Limited environments, but my Commander-focused brain shall look elsewhere for my squirrels
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