Flame War
Unfortunately, the Magic formats where its legal are also far faster and more powerful than this could ever keep up with, unless youre specifically looking for the highest possible density of cycling or eternalize effects
The majority of the cards in the deck slowly burn your opponents, and in some cases, deal massive amounts
This art by Akira Egawa is incredible, showing Mew casually terrorizing Galar by lifting double-decker buses and taxi cabs
Unfortunately for the owner of that creature, they lose the game when the creature dies, kind of like reverse Phage, the Untouchable
Oh, and did I mention that if you draw three cards, lose two cards, and have a Psychatog on the table, you've just grown your 'Tog by +6/+6 (two cards in graveyard + Fact or Fiction + 3 cards in hand -- discard the three cards to have six in the grave, remove all six to give another +3/+3)