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https://twitter.com/bdbrode/status/666359351980920832
A class card is 4x more likely to be discovered.
Sorry we didn't make that more clear during the announcement.
簡單的說就是Brode在推特上做出官方說明，
職業卡對於中立卡來說，
有4倍的機率在"發現"機制中出現。
(也就是說，帶有"發現"比原先預期的還強，)