I went with lifetap simply because I couldn't find it for sell at any reasonable price. Cheapest I could find was 24gold for adept 1 and like 10 gold for an app4.
Favor of the Fallen would be my last choice personally. I allready had adept 1 Rat spell and MAster 1 blight. I don't know how much difference the rat spell is between adept 1 and Master 2, but it might not be a bad choice either.
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Hi