I do not have Magearna nor do I know someone trading it. Which legendaries did you need? I don't think you need Mew, Jirachi, Shaymin, etc to obtain the shiny charm though.
would it be possible to teade ahead of time? im gonna get the shiny charm for bdsp and am missing legendaries for it. plus im only inrerested in a singke copy of each minus arceus anyways. once i got the shiny charm i can farm shinies to send back to you in return.
how much longer will your giveaway be going on for? im working on collecting legendaries mythics and shinies so ill be back next week for round 2 if possible