[Squirrelloid]

Blood sacking only really works against nations where you have a substantial dominion advantage over them *and* the ability to leverage that dominion advantage. Against an opponent with well-entrenched dominion they have plenty of time to attack you militarily and destroy temples or disrupt bloodhunting before you come anywhere close to killing them.

2 checks/slave seems perfectly reasonable in that context. Its a way to kill someone you were already beating, and it uses valuable mage time and burns slaves. (Especially if you're doing enough blood sacrifice to matter, the cost in slaves per turn is stupendous). Remember you can't target dom spread.

Now, blood sacrifice is much better on smaller maps, and it much better on non-wrap-around maps. (You can fill a corner with dominion, which limits the direction future candles can propogate).