Well, I have all available Legendaries from ORAS, most of the 20th anniversary and many pulled from older games. Only one I'm not sure is legit is Mew and possibly Darkrai.
Some hidden abilities available too. Please let me know what you're looking for and see if I have it.
Shinies:
(gen7) Pichu - lvl 3 - 5IVs (31:31:31:xx:31:31) impish nature
(gen7) female Salandit - 4IVs (xx:31:xx:31:31:31) careful nature
(gen7) Finneon - poor IVs, adamant nature
(gen7) Gengar - lvl 58 - poor IVs, Jolly nature
(gen6) Charmander - 4IVs (31:31:31:xx:xx:31) sassy nature
Perfect IVs:
(gen7) HA Cubone - lvl 1 with quirky nature and egg move Iron Head
(gen7) female Salandit - lvl 1 with Mild nature
(gen6) Charmander - lvl 1 with modest nature and egg moves Ancient Power, Dragon Pulse
(gen6) Amaura - lvl 1 with Rash nature and one egg move Discharge