The Yearlong Discovery is a limited Card Pack available from May 12, 2013 at 12:00 AM (PST) to May 20, 2013 at 7:59 PM (PST).
The pack featured the first power 17 Ultra Rare in the game with Barbara, Ultimate Empress. As well, the pack featured nine additional cards, three Ultra Rare and six Rare cards, all of which are re-releases of cards originally featured in the Kingdom of Dreams card pack.