Mega Stones

[QuillamiKotori]

So yeah, first of all sorry for this dumb question but how to get those mega stones in Pokemon Sun and Moon that is not accessible to get via in-game (I found out that a lot of mega stones are distributed via events) any method will work as if there is a method. Thank you so much!

[Delta Blast Burn]

You can import the Wonder Card into your save with pkhex. You need a way to access your save with requires cfw on your 3ds.