[militarist]

Ancestor Vessels are cool for 2 reasons - stats and magical frightening arrows.

But really, getting to account their low price and the fact they are cap only, I believe you need high dominion, as you would prefer to have them a lot. Because of arrows, I believe it is better to have many non-blessed of them then small amount of blessed. For arrows bless doesn't matter, unless you choose death, but it's risky.

So, if you have high dominion.. your maximum synergy will be : good scales, high dominion, two-headed awake regenerating pretender, who spreads dominion from turn 1 and who , with high dominion (9-10) adds to points spend on this dominion a lot of sense.
So, no blesses!