Challenge Code:
/challenge [Gen 8] Mix and Mega @@@ [Gen 8] Godly Gift, +Xerneas, *Xerneas, -Xerneas+Venusaurite, -Xerneas+Charizardite X, -Xerneas+Charizardite Y, -Xerneas+Blastoisinite, -Xerneas+Alakazite, -Xerneas+Slowbronite, -Xerneas+Pinsirite, -Xerneas+Gyaradosite, -Xerneas+Aerodactylite, -Xerneas+Mewtwonite X, -Xerneas+Mewtwonite Y, -Xerneas+Ampharosite, -Xerneas+Steelixite, -Xerneas+Scizorite, -Xerneas+Heracronite, -Xerneas+Houndoominite, -Xerneas+Tyranitarite, -Xerneas+Sceptilite, -Xerneas+Swampertite, -Xerneas+Gardevoirite, -Xerneas+Galladite, -Xerneas+Sablenite, -Xerneas+Aggronite, -Xerneas+Manectite, -Xerneas+Sharpedonite, -Xerneas+Cameruptite, -Xerneas+Altarianite, -Xerneas+Banettite, -Xerneas+Absolite, -Xerneas+Glalitite, -Xerneas+Salamencite, -Xerneas+Metagrossite, -Xerneas+Latiosite, -Xerneas+Latiasite, -Xerneas+Lopunnite, -Xerneas+Garchompite, -Xerneas+Lucarionite, -Xerneas+Abomasite, -Xerneas+Audinite, -Xerneas+Diancite
Tour Code:
/tour create [Gen 8] Mix and Mega, elim,,, [Gen 8] Godly Gift Mix and Mega
/tour rules [Gen 8] Godly Gift, +Xerneas, *Xerneas, -Xerneas+Venusaurite, -Xerneas+Charizardite X, -Xerneas+Charizardite Y, -Xerneas+Blastoisinite, -Xerneas+Alakazite, -Xerneas+Slowbronite, -Xerneas+Pinsirite, -Xerneas+Gyaradosite, -Xerneas+Aerodactylite, -Xerneas+Mewtwonite X, -Xerneas+Mewtwonite Y, -Xerneas+Ampharosite, -Xerneas+Steelixite, -Xerneas+Scizorite, -Xerneas+Heracronite, -Xerneas+Houndoominite, -Xerneas+Tyranitarite, -Xerneas+Sceptilite, -Xerneas+Swampertite, -Xerneas+Gardevoirite, -Xerneas+Galladite, -Xerneas+Sablenite, -Xerneas+Aggronite, -Xerneas+Manectite, -Xerneas+Sharpedonite, -Xerneas+Cameruptite, -Xerneas+Altarianite, -Xerneas+Banettite, -Xerneas+Absolite, -Xerneas+Glalitite, -Xerneas+Salamencite, -Xerneas+Metagrossite, -Xerneas+Latiosite, -Xerneas+Latiasite, -Xerneas+Lopunnite, -Xerneas+Garchompite, -Xerneas+Lucarionite, -Xerneas+Abomasite, -Xerneas+Audinite, -Xerneas+Diancite
/tour autostart 7
/tour autodq 4
/wall A Gifted stat overrides a Mega Stone boost to a stat, and you'll only receive the Godly Gift stat change to that stat! Furthermore, only the base form donates to the receivers, and not the Mega form!
/wall **SAMPLE TEAMS**:
https://www.smogon.com/forums/threads/om-mashup-megathread.3657159/post-9372274