I'm 99% sure the serial codes are region locked.
However, we can try. It won't hurt anything.
Some new Events have been Announced for Pokemon X, Y, Omega Ruby, Alpha Sapphire.
Each month a different Pokemon will be made available via Gamestop or Nintendo Network
February (1st-24th) (Gamestop)
Mew
100 Lv
Synchronize
Pound
March (1st-24th) (Nintendo Network)
Celebi
100 Lv
Natural Cure
Confusion
Recover
Heal Bell
Safeguard
April (1st-24th) (Nintendo Network)
Jirachi
100 Lv
Serene Grace
Wish
Confusion
Rest
May (1st-24th) (Gamestop)
Darkai
100 Lv
Bad Dreams
Dark Void
Ominous Wind
Nightmare
Feint Attack
June (1st-24th) (Nintendo Network)
Manaphy
100 Lv
Hydration
Tail Glow
Bubble
Water Sport
July (1st-24th) (Nintendo Network)
Shaymin
100 Lv
Natural Cure
Seed Flare
Aromatherapy
Substitute
Energy Ball
August (1st-24th) (Gamestop)
Arceus
100 Lv
Multitype
Judgment
Recover
Hyper Beam
Perish Song
September (1st-24th) (Nintendo Network)
Victini
100 Lv
Victory Star
Incinerate
Quick Attack
Endure
Confusion
October (1st-24th) (Nintendo Network)
Keldeo
100 Lv
Justified
Aqua Jet
Leer
Double Kick
Bubble Beam
November (1st-24th) (Gamestop)
Genesect
100 Lv
Download
Techno Blast
Magnet Bomb
Solar Beam
Signal Beam
December (1st-24th) (Nintendo Network)
Meloetta
100 Lv
Serene Grace
Quick Attack
Confusion
Round
Source:
http://www.pokemon20.com/en-us/mythical.html#feb
Delphox(nicknamed Firefox) @ 65lv
Greninja @ 65lv
Noivern @ 65lv
Pangoro @ 65lv
Florges @ 65lv
Aegislash @.... 66lv
Play time: 25 hours
Gym Badges: 7
Pokedex: Everything(thanks to PKHeX, svdt & SavedataFiler I transferred all my Pokemon from αS to Y. Epic)