Its about people called Pokmon trainers trying to catch and train the little monsters for sport
Your first thought was, Wow, these players seem upset and have bad manners. But the formers opponent cast Ashnods Coupon while the latter was casting a Blacker Lotus
Discarding cards stocks your graveyard, but it has no clear pay-off beyond that
The fact that this works even if your cards are in exile is particularly intriguing, since it stops graveyard hate from blowing your deck apart, and also creates opportunities for shenanigans using effects like Surgical Extraction
Creature-heavy decks, like Giada, Font of Hope, meanwhile, do want to get into combat but also play a bunch of heavy hitters, making this a great inclusion
I saw it while it was up and while some looked good many were oversaturated, had wrong holo patterns, and had inconsistencies that are known with proxys like their borders