>>57931864
Gholdengo is rotating too. Besides typlosion and charizard+dusclops, there's not too much that can ohko it currently. Dragapult blowing up a dusknoir still doesn't kill it. Even zekrom can only OHKO venu at 5 prizes
Emboar decks could pop up as reshiram is broken like zekrom, but can KO venu way earlier too

380 HP may honestly be fat enough post rotation to survive. but I imagine other megas will also have broken cards so they can beat each others.
If latias is hitting 300 on a basic with a buffed old mega zard X attack, then what's a stage2 zard X going to be hitting nowadays