The Special Battle rules for Rating Battle Season 15 have been revealed by The Pokémon Company. Season 15 will run from April 2 through June 17 and runs on the original Pokémon Sun & Moon and Pokémon Ultra Sun & Ultra Moon, with rankings separate to each other. This ruleset only allows Pokémon that can only have the move Metronome across all generations (except Mewtwo, Dusclops and Dusknoir)
Battle type: Single Battle
Pokémon Restrictions: Only Clefairy, Clefable, Mankey, Primeape, Poliwhirl, Poliwrath, Abra, Kadabra, Alakazam, Machop, Machoke, Machamp, Geodude, Graveler, Golem, Gengar, Drowzee, Hypno, Hitmonlee, Hitmonchan, Chansey, Mr. Mime, Jynx, Electabuzz, Magmar, Snorlax, Mew, Cleffa, Togepi, Togetic, Politoed, Aipom, Snubbull, Granbull, Teddiursa, Ursaring, Smeargle, Smoochum, Miltank, Blissey, Celebi, Ludicolo, Makuhita, Hariyama, Sableye, Meditite, Medicham, Plusle, Minun, Volbeat, Illumise, Spinda, Kecleon, Banette, Jirachi, Ambipom, Happiny, Munchlax, Electivire, Magmortar, Togekiss.
Attack Restrictions: Metronome only
Item Restrictions: No Mega Stones
The other standard rules apply, including all set to Level 50 if above that, and you choose 1 Pokémon out of your 6, and you cannot have two Pokémon holding the same hold item. Battles have a 10 minute duration, with turns having a 60 second timer. Pokémon transferred through Pokémon Bank are usable in this ruleset
Source: Serebii.net
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