Nicol Bolas, the Ravager / Nicol Bolas, the Arisen Just 4 mana gets you Nicol Bolas, the Ravager and immediately forces your opponents to discard
(Your opponent chooses the new Active Pokmon.) Loudred C - Body Slam 10 Flip a coin
Its also pretty powerful, with its standard attack (costing one Grass and one Colorless Energy to use) deals 60 damage for each Energy attached to all of your opponents Pokmon, which can do some serious damage if timed well
And yes, I am fully aware that there are workarounds to try to make the economy cheaper, with the biggest being playing a bunch of limited and rare-drafting aggressively, but just because there is a weird hack to make a very unfriendly system slightly more friendly doesn't mean the system is good
Creature-based counters like this have been beloved at the kitchen table ever since Mystic Snake was printed way back in Apocalypse