Shards of Alara is the forty-seventh Magic expansion and was released October 2008 as the first set in the Alara block. The prerelease events for this set were held on September 27–28, 2008. Release events were held on October 3, 2008, the same day the set went on sale.
Shards of Alara was the first set to follow a new packaging policy, which amongst other things introduced a new rarity level called mythic rare, as well as the replacement of one of the commons in a booster pack with a basic land (the first time this was done outside of a core set). After evaluating the set sizes, Wizards of the Coast decided that card sets would be smaller than they had traditionally been. Initial sets of a block were now 249 cards (101 commons, 60 uncommons, 53 rares, 15 mythic rares, 20 basic lands) instead of the approximately 300 cards of previous expansions. Shards of Alara heralded the return of planeswalker cards, and introduced the first multicolored planeswalkers.