以前有讲过 玩家也有自己统计 不过在官方的网页好像是第一次公布?
https://tw.battle.net/support/zh/article/32545
https://us.battle.net/support/en/article/32545
应该是因应行动装置的机率透明化政策贴的(?)
Card Rarity Rates
Rare Cards:
Each card pack contains at least 1 rare card.
每包卡包至少有一张精良 (实际上应该是精良"以上")
Epic Cards:
One epic card can be obtained in 5 card packs on average.
平均5包卡包一张史诗
Legendary Cards:
One Legendary card can be obtained within the first 10 packs of a new set.
每个资料片的前10包会有一张传说
Note: Subsequent Legendary cards can be obtained in 20 card packs on average.
第一张传说之后 平均20包一张传说