Critical shot, damage and knowledge are all good for mages. but make sure you max out knowledge before the others its the most beneficial to your mage, I'm working on maxing out critical shot next, the more your mage can crit the better he is and the more dmg he deals out. damage is still good this passive i will be maxing out next, but you'll crit out more dmg then you'll deal just upgrading your damage passive.
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