Call of Liberty is a limited time card pack available starting July 3, 2013.
The pack featured one new Ultra Rare and one new Rare card. Additionally, players who drew from the pack started with a normal LCP Ultra Rare drop rate, and could eventually gain five times the normal drop rate on the fifth draw, a drop rate which continued for all successive draws. Furthermore, players have a random chance to achieve a five times drop rate on the next draw, regardless of number of draws.
The pack also featured a flat five times draw rate for the new Ultra Rare up until the fifth draw, at which the rate increases.