Allow Charizard Y and Mewtwonite Y in randoms
Allow Charizard Y and Mewtwonite Y in randoms

For Pokemon with multiple mega evolutions (Charizard and Mewtwo) it should randomly select either.
svivian/Pokemon-Showdown,SerperiorBae/PokemonShowdown2,SerperiorBae/Bae-Showdown-2,Tesarand/Pokemon-Showdown,TheManwithskills/Server-2,Celecitia/Plux-Pokemon-Showdown,megaslowbro1/Showdown-Server-again,BuzzyOG/Pokemon-Showdown,AvinashSwaminathan/lotus-v2,sama2/Universe-Pokemon-Showdown,hayleysworld/Pokemon-Showdown,abulechu/Dropp-Pokemon-Showdown,zek7rom/SpacialGaze,SolarisFox/Pokemon-Showdown,PrimalGallade45/Lumen-Pokemon-Showdown,Irraquated/Pokemon-Showdown,abulechu/Lumen-Pokemon-Showdown,CreaturePhil/Pokemon-Showdown,Flareninja/Hispano-Pokemon-Showdown,Evil-kun/Pokemon-Showdown,svivian/Pokemon-Showdown,sama2/Lumen-Pokemon-Showdown,yashagl/pokemon,Checkinator/Pokemon-Showdown,iFaZe/SliverX,QuiteQuiet/Pokemon-Showdown,PS-Spectral/Spectral,CharizardtheFireMage/Showdown-Boilerplate,KewlStatics/Showdown-Template,Extradeath/psserver,AbsolitoSweep/Absol-server,xfix/Pokemon-Showdown,Sora-Server/Sora,Bryan-0/Pokemon-Showdown,Nineage/Showdown-Boilerplate,SerperiorBae/Pokemon-Showdown-1,TheManwithskills/DS,AustinXII/Pokemon-Showdown,Pikachuun/Joimmon-Showdown,Vacate/Pokemon-Showdown,Wando94/Spite,Adithya4Uberz/The-Tsunami-League,abrulochp/Lumen-Pokemon-Showdown,iFaZe/SilverZ,TheFenderStory/Pokemon-Showdown,Lauc1an/Perulink-Showdown,danpantry/Pokemon-Showdown,hayleysworld/serenity,hayleysworld/serenityc9,Fusxfaranto/Pokemon-Showdown,ShowdownHelper/Saffron,lFernanl/Mudkip-Server,Werfin96/Ultimate,Atwar/http-server-femalehq.rhcloud.com-80.psim.us-,Extradeath/psserver,Kokonoe-san/Glacia-PS,Atwar/ServerClassroom,Alpha-Devs/OmegaRuby-Server,TogeSR/Lumen-Pokemon-Showdown,AWailOfATail/awoat,MayukhKundu/Technogear-Final,ShowdownHelper/Saffron,TheManwithskills/New-boiler-test,SubZeroo99/Pokemon-Showdown,anubhabsen/Pokemon-Showdown,Ridukuo/Test2,Adithya4Uberz/The-Tsunami-League,jd4564/Pokemon-Showdown,Johto-Serverr/Werfin-Boilerplate,TheManwithskills/Dusk--Showdown,xCrystal/Pokemon-Showdown,hayleysworld/serenityserver,SerperiorBae/BaeShowdown,Volcos/SpacialGaze,Flareninja/Showdown-Boilerplate,Sora-League/Sora,CreaturePhil/Showdown-Boilerplate,TheManwithskills/Dusk--Showdown,gustavo515/final,miahjennatills/Pokemon-Showdown,yashagl/pokemon-showdown,Kill-The-Noise/BlakJack-Boilerplate,anubhabsen/Pokemon-Showdown,Darkshadow6/PokeMoon-Creation,Pablo000/aaa,SerperiorBae/Pokemon-Showdown-1,ZeroParadox/BlastBurners,UniversalMan12/Universe-Server,Pikachuun/Joimmon-Showdown,gustavo515/batata,TheDiabolicGift/Lumen-Pokemon-Showdown,Irraquated/Showdown-Boilerplate,Atwar/ServerClassroom,forbiddennightmare/Pokemon-Showdown-1,AvinashSwaminathan/lotus,kupochu/Pokemon-Showdown,hayleysworld/harmonia,EienSeiryuu/Pokemon-Showdown,catanatron/pokemon-rebalance,TheManwithskills/COC,Irraquated/EOS-Master,abulechu/Dropp-Pokemon-Showdown,Kill-The-Noise/BlakJack-Boilerplate,svivian/Pokemon-Showdown,DarkSuicune/Kakuja-2.0,Mystifi/Exiled,Atwar/server-epilogueleague.rhcloud.com,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,asdfghjklohhnhn/Pokemon-Showdown,Nineage/Origin,SolarisFox/Pokemon-Showdown,abrulochp/Dropp-Pokemon-Showdown,SilverTactic/Showdown-Boilerplate,SerperiorBae/Pokemon-Showdown,Flareninja/Pokemon-Showdown-1,Flareninja/Pokemon-Showdown,javi501/Lumen-Pokemon-Showdown,LightningStormServer/Lightning-Storm,TheManwithskills/Server-2,MeliodasBH/boarhat,Yggdrasil-League/Yggdrasil,Flareninja/Pokemon-Showdown-1,sirDonovan/Pokemon-Showdown,PauLucario/LQP-Server-Showdown,Kill-The-Noise/BlakJack-Boilerplate,SilverTactic/Pokemon-Showdown,azum4roll/Pokemon-Showdown,Kevinxzllz/PS-Openshift-Server,Breakfastqueen/advanced,Irraquated/Pokemon-Showdown,TheManwithskills/COC,TheManwithskills/serenity,Flareninja/Showdown-Boilerplate,FakeSloth/Infinite,javi501/Lumen-Pokemon-Showdown,panpawn/Gold-Server,KewlStatics/Alliance,Disaster-Area/Pokemon-Showdown,Psyientist/Showdown-Boilerplate,ZeroParadox/BlastBurners,Enigami/Pokemon-Showdown,yashagl/pokemon-showdown,Parukia/Pokemon-Showdown,Neosweiss/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,ShowdownHelper/Saffron,Ecuacion/Pokemon-Showdown,panpawn/Gold-Server,Ridukuo/Test,kubetz/Pokemon-Showdown,JellalTheMage/PS-,MeliodasBH/boarhat,Ridukuo/Test2,kuroscafe/Paradox,comedianchameleon/servertest1,abrulochp/Lumen-Pokemon-Showdown,MasterFloat/LQP-Server-Showdown,FakeSloth/Infinite,Enigami/Pokemon-Showdown,TheManwithskills/Server-2,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,ehk12/bigbangtempclone,EienSeiryuu/Pokemon-Showdown,johtooo/PS,VoltStorm/Server-pokemon-showdown,hayleysworld/serenityc9,scotchkorean27/Pokemon-Showdown,Flareninja/Lumen-Pokemon-Showdown,LustyAsh/EOS-Master,Guernouille/Pokemon-Showdown,DesoGit/TsunamiPS,yashagl/pokemon,urkerab/Pokemon-Showdown,hayleysworld/asdfasdf,SilverTactic/Showdown-Boilerplate,Thiediev/Pokemon-Showdown,Irraquated/EOS-Master,Parukia/Pokemon-Showdown,lFernanl/Pokemon-Showdown,DalleTest/Pokemon-Showdown,ZestOfLife/PSserver,Luobata/Pokemon-Showdown,DesoGit/Tsunami_PS,MayukhKundu/Technogear-Final,TheFenderStory/Pokemon-Showdown,SerperiorBae/Pokemon-Showdown-1,Alpha-Devs/Alpha-Server,ZestOfLife/FestiveLife,Sora-Server/Sora,Darkshadow6/PokeMoon-Creation,QuiteQuiet/Pokemon-Showdown,cadaeic/Pokemon-Showdown,JellalTheMage/PS-,comedianchameleon/test,abrulochp/Dropp-Pokemon-Showdown,Flareninja/Sora,scotchkorean27/Pokemon-Showdown,comedianchameleon/test,MasterFloat/Pokemon-Showdown,HoeenCoder/SpacialGaze,Guernouille/Pokemon-Showdown,TheManwithskills/Server,SkyeTheFemaleSylveon/Pokemon-Showdown,ehk12/clone,xfix/Pokemon-Showdown,hayleysworld/harmonia,Kenny-/Pokemon-Showdown,SerperiorBae/Pokemon-Showdown,Zarel/Pokemon-Showdown,Irraquated/Showdown-Boilerplate,HoeenCoder/SpacialGaze,lAlejandro22/lolipoop,aakashrajput/Pokemon-Showdown,JennyPRO/Jenny,Wando94/Spite,AWailOfATail/Pokemon-Showdown,Kevinxzllz/PS-Openshift-Server,SerperiorBae/Bae-Showdown-2,PrimalGallade45/Dropp-Pokemon-Showdown,MasterFloat/Pokemon-Showdown,bai2/Dropp,Yggdrasil-League/Yggdrasil,Ransei1/Alt,Zarel/Pokemon-Showdown,Pokemon-Devs/Pokemon-Showdown,kotarou3/Krister-Pokemon-Showdown,ScottehMax/Pokemon-Showdown,Oiawesome/DPPtServ2,k3naan/Pokemon-Showdown,megaslowbro1/Showdown-Server-again,Pikachuun/Pokemon-Showdown,Psyientist/Showdown-Boilerplate,HoeenCoder/SpacialGaze,sirDonovan/Pokemon-Showdown,SilverTactic/Pokemon-Showdown,Git-Worm/City-PS,Zipzapadam/Server,TheDiabolicGift/Showdown-Boilerplate,RustServer/Pokemon-Showdown,xfix/Pokemon-Showdown,ZestOfLife/FestiveLife,Pikachuun/Pokemon-Showdown-SMCMDM,TheDiabolicGift/Lumen-Pokemon-Showdown,kotarou3/Krister-Pokemon-Showdown,CharizardtheFireMage/Showdown-Boilerplate,Evil-kun/Pokemon-Showdown,LegendBorned/PS-Boilerplate,ZestOfLife/PSserver,Ridukuo/Test,KewlStatics/Pokeindia-Codes,hayleysworld/asdfasdf,Atwar/http-server-femalehq.rhcloud.com-80.psim.us-,psnsVGC/Wish-Server,AWailOfATail/awoat,Lord-Haji/SpacialGaze,xCrystal/Pokemon-Showdown,SerperiorBae/BaeShowdown,yashagl/yash-showdown,lFernanl/Lumen-Pokemon-Showdown,EmmaKitty/Pokemon-Showdown,DB898/theregalias,Zarel/Pokemon-Showdown,miahjennatills/Pokemon-Showdown,ehk12/coregit,jumbowhales/Pokemon-Showdown,TheManwithskills/Server,TheManwithskills/DS,hayleysworld/Pokemon-Showdown,QuiteQuiet/Pokemon-Showdown,gustavo515/gashoro,kubetz/Pokemon-Showdown,cadaeic/Pokemon-Showdown,ehk12/bigbangtempclone,PauLucario/LQP-Server-Showdown,TheFenderStory/Showdown-Boilerplate,AnaRitaTorres/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,InvalidDN/Pokemon-Showdown,psnsVGC/Wish-Server,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,Tesarand/Pokemon-Showdown,Enigami/Pokemon-Showdown,zczd/enculer,megaslowbro1/Pokemon-Showdown,BuzzyOG/Pokemon-Showdown,Flareninja/Sora,hayleysworld/Showdown-Boilerplate,jumbowhales/Pokemon-Showdown,superman8900/Pokemon-Showdown,arkanox/MistShowdown,TbirdClanWish/Pokemon-Showdown,Breakfastqueen/advanced,DB898/theregalias,Elveman/RPCShowdownServer,ZeroParadox/ugh,UniversalMan12/Universe-Server,azum4roll/Pokemon-Showdown,Ecuacion/Lumen-Pokemon-Showdown,SerperiorBae/Bae-Showdown,danpantry/Pokemon-Showdown,MeliodasBH/Articuno-Land,PrimalGallade45/Dropp-Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,Elveman/RPCShowdownServer,Checkinator/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,zczd/enculer,piiiikachuuu/Pokemon-Showdown,Bryan-0/Pokemon-Showdown,Hidden-Mia/Roleplay-PS,PrimalGallade45/Lumen-Pokemon-Showdown,DarkSuicune/Pokemon-Showdown,Legit99/Lightning-Storm-Server,kuroscafe/Showdown-Boilerplate,Raina4uberz/Light-server,yashagl/yash-showdown,SerperiorBae/PokemonShowdown2,Git-Worm/City-PS,Tesarand/Pokemon-Showdown,Kokonoe-san/Glacia-PS,Lord-Haji/SpacialGaze,Pikachuun/Pokemon-Showdown-SMCMDM,SSJGVegito007/Vegito-s-Server,AWailOfATail/Pokemon-Showdown,Sora-Server/Sora,yashagl/pokecommunity,lFernanl/Lumen-Pokemon-Showdown,Celecitia/Plux-Pokemon-Showdown,NoahVSGamingYT/Pokemon-Showdown,zek7rom/SpacialGaze,KewlStatics/Shit,Mystifi/Exiled,forbiddennightmare/Pokemon-Showdown-1,ankailou/Pokemon-Showdown,Vacate/Pokemon-Showdown,urkerab/Pokemon-Showdown,LustyAsh/EOS-Master,comedianchameleon/test,lAlejandro22/lolipoop,JellalTheMage/Jellals-Server,KewlStatics/Alliance,SerperiorBae/Bae-Showdown,AbsolitoSweep/Absol-server,yashagl/pokecommunity,hayleysworld/serenity,Alpha-Devs/OmegaRuby-Server,aakashrajput/Pokemon-Showdown,AustinXII/Pokemon-Showdown,HoeenCoder/SpacialGaze,Zipzapadam/Server,Raina4uberz/Light-server,Ransei1/Alt,Volcos/SpacialGaze,DarkSuicune/Pokemon-Showdown,Legit99/Lightning-Storm-Server,InvalidDN/Pokemon-Showdown,xfix/Pokemon-Showdown,TheManwithskills/Creature-phil-boiler,xfix/Pokemon-Showdown,LightningStormServer/Lightning-Storm,catanatron/pokemon-rebalance,SilverTactic/Dragotica-Pokemon-Showdown,Legendaryhades/Oblivion,piiiikachuuu/Pokemon-Showdown,Flareninja/Pokemon-Showdown,MeliodasBH/Articuno-Land,CreaturePhil/Showdown-Boilerplate,Ecuacion/Lumen-Pokemon-Showdown,gustavo515/final,KewlStatics/Pokeindia-Codes,Pikachuun/Touhoumon-Showdown,lFernanl/Zero-Pokemon-Showdown,DarkSuicune/Kakuja-2.0,Firestatics/Omega-Alpha,Ecuacion/Pokemon-Showdown,RustServer/Pokemon-Showdown,DalleTest/Pokemon-Showdown,johtooo/PS,MayukhKundu/Mudkip-Server,Chespin14/Custom-Platform-Pokemon-Showdown,svivian/Pokemon-Showdown,ankailou/Pokemon-Showdown,Articuno-I/Pokemon-Showdown,Firestatics/omega,MayukhKundu/Flame-Savior,sama2/Viridian-Pokemon-Showdown,theodelhay/test,SilverTactic/Dragotica-Pokemon-Showdown,Oiawesome/DPPtServ2,lFernanl/Mudkip-Server,hayleysworld/serenityserver,bai2/Dropp,Flareninja/Sora,megaslowbro1/Pokemon-Showdown-Server-for-megaslowbro1,TheManwithskills/Server---Thermal,Sora-League/Sora,SerperiorBae/Bae-Showdown-2,xCrystal/Pokemon-Showdown,AnaRitaTorres/Pokemon-Showdown,kuroscafe/Showdown-Boilerplate,BlazingAura/Showdown-Boilerplate,comedianchameleon/servertest1,Atwar/server-epilogueleague.rhcloud.com,ehk12/clone,sama2/Viridian-Pokemon-Showdown,ehk12/coregit,brettjbush/Pokemon-Showdown,Syurra/Pokemon-Showdown,UniversalMan12/Universe-Server,hayleysworld/Showdown-Boilerplate,SkyeTheFemaleSylveon/Pokemon-Showdown,SerperiorBae/BaeShowdown,BasedGod7/PH,EmmaKitty/Pokemon-Showdown,KewlStatics/Shit,panpawn/Gold-Server,SkyeTheFemaleSylveon/Mudkip-Server,Parukia/Pokemon-Showdown,SubZeroo99/Pokemon-Showdown,Wando94/Pokemon-Showdown,Lauc1an/Perulink-Showdown,MayukhKundu/Pokemon-Domain,TogeSR/Lumen-Pokemon-Showdown,Flareninja/Lumen-Pokemon-Showdown,BuzzyOG/Pokemon-Showdown,Enigami/Pokemon-Showdown,AvinashSwaminathan/Pokelegends,Syurra/Pokemon-Showdown,TheManwithskills/Creature-phil-boiler,JennyPRO/Jenny,TheFenderStory/Showdown-Boilerplate,MayukhKundu/Pokemon-Domain,Firestatics/Firestatics46,SSJGVegito007/Vegito-s-Server,SkyeTheFemaleSylveon/Mudkip-Server,JellalTheMage/Jellals-Server,Stroke123/POKEMON,abulechu/Lumen-Pokemon-Showdown,Lord-Haji/SpacialGaze,Alpha-Devs/Alpha-Server,lFernanl/Pokemon-Showdown,AustinXII/Pokemon-Showdown,Mystifi/Exiled,ZeroParadox/ugh,Flareninja/Hispano-Pokemon-Showdown,Articuno-I/Pokemon-Showdown,TheManwithskills/serenity,MayukhKundu/Flame-Savior,megaslowbro1/Pokemon-Showdown,Breakfastqueen/advanced,Irraquated/Pokemon-Showdown,SerperiorBae/Bae-Showdown,Disaster-Area/Pokemon-Showdown,Neosweiss/Pokemon-Showdown,DesoGit/TsunamiPS,superman8900/Pokemon-Showdown,gustavo515/gashoro,MasterFloat/LQP-Server-Showdown,HoeenKid/Pokemon-Showdown-Johto,LightningStormServer/Lightning-Storm,SerperiorBae/Pokemon-Showdown,lFernanl/Zero-Pokemon-Showdown,MayukhKundu/Technogear,Darkshadow6/git-remote-add-scalingo-git-scalingo.com-pokemoonforums,FakeSloth/wulu,Extradeath/advanced,BlazingAura/Showdown-Boilerplate,MayukhKundu/Technogear,Adithya4Uberz/KTN,TheDiabolicGift/Showdown-Boilerplate,kupochu/Pokemon-Showdown,LegendBorned/PS-Boilerplate,PS-Spectral/Spectral,Firestatics/Firestatics46,urkerab/Pokemon-Showdown,Darkshadow6/PokeMoon-Creation,arkanox/MistShowdown,Extradeath/advanced,KewlStatics/Showdown-Template,theodelhay/test,k3naan/Pokemon-Showdown,Firestatics/Omega-Alpha,brettjbush/Pokemon-Showdown,Firestatics/omega,panpawn/Pokemon-Showdown,KaitoV4X/Showdown,TheManwithskills/New-boiler-test,DesoGit/Tsunami_PS,KaitoV4X/Showdown,asdfghjklohhnhn/Pokemon-Showdown,svivian/Pokemon-Showdown,Pokemon-Devs/Pokemon-Showdown,sama2/Dropp-Pokemon-Showdown,panpawn/Pokemon-Showdown,Pikachuun/Pokemon-Showdown,gustavo515/test,AvinashSwaminathan/lotus-v3,Wando94/Pokemon-Showdown,Nineage/Origin,Pablo000/aaa,TheManwithskills/Server---Thermal,sama2/Lumen-Pokemon-Showdown,Gold-Solox/Pokemon-Showdown,CreaturePhil/Pokemon-Showdown,sama2/Dropp-Pokemon-Showdown,kuroscafe/Paradox,MayukhKundu/Mudkip-Server,Stroke123/POKEMON,jd4564/Pokemon-Showdown,Hidden-Mia/Roleplay-PS,gustavo515/test,PS-Spectral/Spectral,NoahVSGamingYT/Pokemon-Showdown,Gold-Solox/Pokemon-Showdown,gustavo515/batata,ScottehMax/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,Sora-League/Sora,sama2/Universe-Pokemon-Showdown,DesoGit/Tsunami_PS