Megastones for Event Pokemon?

I'm making a Living Dex and I have some spare Mega Stones from Pokemon X/Y.
Just pick a Mega Stone from the list and an Event Pokemon I don't have.

I've got:
Venasaurite
Alakazamite
Scizorite
Ampharosite
Medichamite
Banettite
Gardevoirite
Gengarite
Blastoisite
Garchompite
Absolite

I need:
Jirachi
Phione
Manaphy
Darkrai
Shaymin
Victini
Keldeo
Meloetta
Genesect

Don't forget to add your FC and add me!