Mish-gan
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The Spell Power stat is great for everyone, but if he hadn't invested in it, you probably would have won... try using Readiness and Ethereal Form, it's not bad either!
According to my friend, Spell Power is easy to level up for Orcs, more so than for other factions!
Interesting tactic, I need to try it. The main thing is that the Ethereal Form rune drops, otherwise, it's game over!