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I only have 1 standard hero - Naadir, and he levels up in a standard way:
1. Darkness
2. Summoning with Mines
3. Leadership or Defense, if the previous skill doesn't work out
4. Education
5. Sorcery
At level 23-25, IMO, this is already quite good; the Necropolis army will be so strong that 5 Fireballs won't save you. Against the Necropolis, the Dwarf will definitely be useful. Runes don't seem to remove the Plague effect.
Эх, опять идти за сигаретами... :smile34: