252 SpA Heatran Magma Storm vs. 0 HP / 0 SpD Mega Charizard Y in Sun: 109-129 (36.7 - 43.4%) -- guaranteed 3HKO
252 SpA Heatran Solar Beam vs. 0 HP / 0 SpD Mega Charizard Y: 29-34 (9.7 - 11.4%) -- possible 9HKO
252 SpA Mega Charizard Y Solar Beam vs. 0 HP / 4 SpD Heatran: 36-42 (11.1 - 13%) -- possibly the worst move ever (why this one says that while the other doesn't, especially since this one does more damage, is probably because of lefties, although the only reason to use this in the first place is if AB)
252 SpA Mega Charizard Y Focus Blast vs. 0 HP / 4 SpD Heatran: 288-340 (89.1 - 105.2%) -- 31.3% chance to OHKO
4 Atk Mega Charizard Y Earthquake vs. 0 HP / 0 Def Heatran: 284-336 (87.9 - 104%) -- 25% chance to OHKO