shnurov_hl
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Of course, it's not a secret. Let's take the first cloak, Cape of Protection; the website says it provides 10% magic resistance within a 3-cell radius. In the game, it provides +30% magic resistance to the entire army.
Cowl of Resistance, the website says: 25% magic resistance, in the game: 50%, and so on.
http://heroes.ag.ru/artefacts/levels/minor/
:D
I don't know why the descriptions are different, but one of the two must be correct.
