Magic: the Gathering - Conspiracy

Mothersite Annoucement today ! - The first-ever multiplayer-focused booster set has new Magic cards with new mechanics that enhance multiplayer play. Returning favorites from throughout Magic’s history round out the set and cultivate an environment of deception and treachery.

The original announcement which will be re-posted latter tonight ‘solved’  had been encrypted.  Pretend you are a code-breaker at Bletchley Park to decrypt.  One hint - use the Vigenere cipher.

We suggest you attempt to decode it first, but for the full solved / decrypted announcement, pop over to the MTG Realm Blog :