Sacrifice - how to use properly?

[Saiko Kila]

I often use sacrifice on two occasions:
1. after Dominating enemies, or charming by demonesses (usually I get demonesses from Demon Portal). Then it basically emulates demonologists' special.

Note that Sacrifice is strenghtened by Destruction skill, like other damaging spells, and by items which increase damage of destructive spells.

2. near end of fight when last stack of enemy survivors, preferably ranged or no-retaliation, is working on my summons, I sacrifice level three unit (usually inquisitors) to replenish some other guys. After that I use resurrection on the sacrificed unit. If I have lots of mana and enemy is still busy, I repeat.