Alan
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For 50 damage, you get one mana. But it seems that in version 3.0, you could deal a total of 75 damage with several hits and get one mana.
In general, it's written poorly in the manual; it's better to search for information on forums.
Тьма - это то, что позволяет смертным не забывать, как ярок бывает свет.