I just managed to defeat the Solo Conquest scenario -- that Banner of Fear made it happen, no doubt--skipping the block and damage phases is awesome. Took down level 5 White city and (with the sacrificed Banner) a level 8 Blue city, on the last turn.
Final score, 216 points. Have no idea if that's any good but for my first solo conquest victory, it was great fun. This game is pretty damn nifty.
I had a fairly similar scenario last night, sacrificed my horn of wrath for 1 additional siege attack to take down the level 5 red city and finished off the level 8 white city on the very last turn after the dummy called end of round.
Was able to dish out a cool 30 damage to take out all the units in a single blow. (29 damage needed overall to kill all of them)
Finished the game on 196