Crew Rewards

Skulls and Unlocking rewards
Rewards are unlocked by crews accruing a certain number of skulls. When the crew reaches the threshold for a reward card, it will automatically become available for crew members to buy. This will not cost any skulls, and skulls will never decrease for any reason.

Crews can earn skulls in 2 ways:
 * Crew battles: 2 for a win, 1 for a loss
 * Crew season rewards: Top crews will get bonus Skulls at the end of each crew season

Crew Rewards
The cost of a crew reward card is determined by it's rarity:
 * Uncommon: 3 Honour + 4 Gems
 * Rare: 6 Honour + 12 Gems
 * Epic: 9 Honour + 45 Gems

Updates
Crew Rewards Screenshot

Released Aug. 7, 2016 in v1.66, the Crew set initially contained only the first 21 cards.

Another 10 cards were added in v2.55 on Feb. 11, 2017. The requirements to unlock the first 21 were adjusted and all crews with more than 700 skulls had their additional skulls removed so that no crew had more than 700 as well so that, while no crew lost access to any cards they had already unlocked, but didn't have any of the new cards unlocked immediately because of their previously acquired skulls.

The final 16 cards were added in the 3.28 update on July 16, 2018 and all crews with more than 1500 skulls had their additional skulls removed so that no crew had more than 1500 for the same reasons they had been reduced to 700 in v2.55.