Thank you lch, from a noob who was very disappointed in the strategy wiki. I should have the game mastered any minute now.
In the meantime, I have a question about the heroic ability formulae. Specifically, I have Udum'ukinna in year five of my second SP game and he has plus 30 strength. By the formula, plus 30 is hundreds of turns away. Have I been incredibly lucky with a DRN, or am I missing something?