reclaim your crown
description - The Mega Mewtwo X set is a self-Imposterproof offensive Stealth Rock setter and Regigigas set. The gameplan after you wisp Imposter is to hard tina every time, since Icicle Crash does 0 and they're not getting Rocks up. Dialga is a blanket -ate check, MGar check, MMY check, Kyogre check and your form of hazard removal. It is imposterproofed by Primal Groudon. Giratina is a secondary Regigigas check, Primal Groudon check etc. Imposter is good glue, Scarf to beat forms of setup since this team lacks Prankster. Most mons dont set up for free on anything, though. Primal Groudon is for Imposterproofing Dialga, Mega Diancie and checking Kyogre and Xerneas. It's overall being a good offensive threat. It can self-Improof but tina will improof in a pinch. The Mega Diancie set is the centerpiece to this team, and it 2HKOs almost in the tier. Specs Boomburst is spammable as it 2HKOs Registeel after minimal chip which should be a testament to how powerful MDiancie's Specs Boomburst is.
Huge s/o to Quantum Tesseract motherlove and fsk for help on this. I don't have an ELO peak or anything but Tzop used this for reqs and it did well, other people have tried it too and liked it.