Its auto-win with infinite life combos, plus there are some funny plays that involve animating it, giving it lifelink, and going to town on anything in sight
However, one of the cards had to be quietly changed shortly after it was announced, as players noticed it contained an unfortunate (and presumably unintentional) homophobic slur
Most importantly, in post-sideboard games, it can sit on the battlefield, get some attacks in while you wait to answer their hate card, and then immediately get the dredge ball rolling again
A quick formula is 28 + (2 x number of colors) + average mana value
Every Pokmon TCG set comes with a standardized numbering system (e.g., 001/198, 002/198) printed on the bottom of every card, and following this order ensures perfect consistency and effortless gap tracking