This is a pack of 6 random character promo cards from the current character pack rotation. Beginning in January 2008, these promo packs also contain foundation promos in a random mix. Characters pack are given away at official Standard & Limited events. The promos are given out at the Scout's discretion to the top players.
Legacy events receive a different kind of 6 promo prize pack, a Legacy Prize Pack while Special Events are usually supported with special promos only available at that event, but may also be supported with a Character Pack, as in the Path of the Master events.
New promos rotate into character packs every month, and each month promos that have been in rotation for 3 months rotate out and into Legacy Prize Packs. For example, the promos that were added in January '08 will rotate out and no longer be available for Standard events beginning in April '08.