>>25058541>252 Atk Tough Claws Mega Metagross Zen Headbutt vs. 0 HP / 4 Def Mega Charizard Y: 226-267 (76 - 89.8%) -- guaranteed 2HKO>252 SpA Mega Charizard Y Fire Blast vs. 0 HP / 0 SpD Mega Metagross in Sun: 578-684 (192 - 227.2%) -- guaranteed OHKO>252 Atk Tough Claws Mega Metagross Zen Headbutt vs. 0 HP / 4 Def Talonflame: 243-286 (81.8 - 96.2%) -- guaranteed 2HKO>252+ Atk Choice Band Talonflame Flare Blitz vs. 0 HP / 4 Def Mega Metagross: 330-390 (109.6 - 129.5%) -- guaranteed OHKOAlthough Talonflame would die from recoil, it still can OHKO MegaGross. Note that Talon is actually faster than MegaGross, so if it's not already on the field, it can switch in, take a hit, and get rid of MegaGross.