Promoting Hero

Promoting a purple to gold

Hero promoting was introduced in the "Manifesto" Expansion on July 10, 2013. Promoting heroes is used for inreasing the "rank" (stars) of a hero while keeping skills. White heroes cannot be promoted. However, you can promote green+ heroes. Gold crystals were also implemented.

Hero Rank Requirements for Promotion
Level Yellow Crystal Green Crystal Blue Crystal Purple Crystal Golden Crystal
Green -> Blue 50 200 100 20 0 0
Blue -> Purple 65 0 200 50 10 0
Purple -> Gold 80 0 0 200 100 20

The golden hero was introduced in this expansion also. A golden hero gets 8 primary and 4 secondary stats.

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