Arceus is not obtainable in Pokémon X and Y, and thus you must transfer it from any Generation V game (Pokémon Black, White, Black 2 and White 2) through the Poké Transporter once the Pokémon Bank is released in December 27th, 2013 or ask someone to trade you one after this date.
It's currently unknown if there's going to be an Arceus' give-away event for Pokémon X and Y.
Pokemon X and Y cannot trade with Diamond, Pearl and Platinum.
There are currently no known upcoming events for Pokemon involving Arceus. It is possible there could be an event for Pokemon X and Y or Omega Ruby and Alpha Sapphire but there seems to be no plans as of yet.
In Pokémon X and Y, the Chamber of Emptiness is where you can find the Banettite, which is the Mega Stone for Banette, and the Spooky Plate for Arceus.
arceus x 6
That's unknown. Arceus is already too strong as it is now, it doesn't need a Mega Evolution, and holding a Mega Stone would prevent the use of the Multitype plates anyway.
Yes You Can Get A Pikachu In Pokemon X and Y.
Arceus is not obtainable in Pokémon X and Y, and thus you must transfer it from any Generation V game (Pokémon Black, White, Black 2 and White 2) through the Poké Transporter once the Pokémon Bank is released in December 27th, 2013 or ask someone to trade you one after this date.It's currently unknown if there's going to be an Arceus' give-away event for Pokémon X and Y.
arceus is the alpha Pokemon
You can try Walmart and look for the Pokemon collector tin with an Arceus level X on the front, buy Pokemon packs from the set "platinum" or go on eBay and look for an arceus Pokemon card to buy.
arceus
arceus is an event pokemon.
the Pokemon # for arceus is 493