Throw open the armories and turn up the forge, and rally your allies from near and far. Throw open the armories and turn up the forge, and rally your allies from near and far. Bring all your skill, luck, and your best gear to bear; as youre plunged headfirst into the Crucible of War. Crucible of War is a supplementary booster set that introduces powerful weapons and equipment, and opens up new strategies and deck building options for all your favorite classes. A Crucible of War booster box, also known as a booster display, contains 24 booster packs with 10 cards each.