"Is it possible to learn this power?" "Not from WotC."
I offer you this meme. It isn't much but it's mine.
By the way here's my dragon homebrew. It's still undergoing playtesting and balancing, and it assumes that you're willing to start your game (or oneshot) at 11th level, but I'd be honoured if you'd use it.
Honestly just because of the shit Wizards has put in their books, making it AL Legal (Looking at you, Silvery Barbs) I am way more inclined to allow homebrew at my table as long as it's not as egregiously overpowered as their own shit. KibblesTasty, Laserllama, and Valda's all tend to get a pass from me.
Give this one a try for a oneshot, if you're feeling saucy about trying more stuff out~ It's a big brew, so it needs lots of testing if it's ever going to achieve balance