>>33025876It wasn't distributed along with all the other pre-Kalos mythicals last year. The same goes for Phione, but Phione can be bred from Manaphy. Deoxys is also counted as required for the diploma in the ORAS National Pokédex. Mythical logic is that once a Pokémon is readily available in a game without events, it is no longer mythical. Ho-Oh and Lugia were counted as mythical from Ruby and Sapphire to Platinum because they were only obtainable in FRLG and Emerald through the Navel Rock + Mystic Ticket event, and they weren't required for National Pokédex completion in any of those games.
There's no National Pokédex in Sun and Moon so there isn't a clear way of seeing whether Deoxys is still considered mythical.
Side games that can transfer mythical Pokémon (Colosseum with Ho-Oh, XD with Lugia, the Ranger series with Manaphy, the other Ranger games with Darkrai, Shaymin, and Deoxys, the Japanese Colosseum bonus disc with Celebi, the international Colosseum bonus disc with Jirachi, Ranch with Mew) don't count as removing mythical status.
