Basically combining Mega Evolution and Z-Moves. Each Mega Evolution has a specific move attached to them. The moves’ damage and effects are up to your own interpretation.
Venusaur - Solar Harvest
Charizard X - Meteor Smash
Charizard Y - Infernal Whirlwind
Blastoise - Cantankerous Cannonade
Alakazam - Cerebral Slash
Gengar - Dimension Shatter
Kanghaskan - Motherly Assault
Pinsir - Wild Piercing
Gyarados - Rippling Crunch
Aerodactyl - Primitive Edge
Mewtwo X - Elastic Smackdown
Mewtwo Y - Psychal Torment
Ampharos - Flaming Fabric
Scizor - Metal Vice
Heracross - Rhino Rampage
Houndoom - Melting Gouge
Tyranitar - Absolute Decimation
Blaziken - Seething Combo
Sceptile - Rocket Tail
Swampert - Swamp Tsunami
Gardevoir - Pearlescent Void
Mawile - Iron Lockjaw
Aggron - Heavy Shrapnel
Medicham - Focused Charm
Manectric - Supersonic Surge
Banette - Puppet Lament
Absol - Disaster Shriek
Latios - Eon Purge
Latias - Eon Missile
Garchomp - Ravenous Scythes
Lucario - Aura Takedown
Abomasnow - Icicle Forest
Beedrill - Nest Bomb
Pidgeot - Divine Skystrike
Slowbro - Shellfish Bash
Steelix - Crystal Rain
Sableye - Illusive Allure
Sharpedo - Savage Bane
Camerupt - Abyssal Eruption
Altaria - Draconic Aria
Glalie - Frost Bite
Salamence - Crescent Slash
Metagross - Calculated Demise
Lopunny - Mile-High Kick
Gallade - Righteous Blade
Audino - Heal Chant
Diancie - Jewel Judgement
Rayquaza - Delta Surge
Groudon - Precipice Annihilation
Kyogre - Origin Seastrike