pokemon cards mega mewtwo ex box XY: BREAKthrough It features a figure ULTRA RARE Mega M Mewtwo

From this data, it seems we might finally have an answer, so, lets go over all the worst offenders

The added upside of slowing down decks that pay life is pretty neat, and it takes an otherwise debatably playable card (wiping only at sorcery speed) into a place where some decks will happily consider it

Doomsday Excruciator Six black creature Demon 6/6 Rare Flying When Doomsday Excruciator enters, if it was cast, each player exiles all but the bottom six cards of their library face down

Soft Score to Bracket Mapping 015 points: Bracket 1 (Exhibition) 1630 points: Bracket 2 (Core) 3150 points: Bracket 3 (Upgraded) 5175 points: Bracket 4 (Optimized) But the soft score alone does not determine the bracket