Discussion of the Necropolis faction.

You can read about effective tactics for using "Sacrifice" here :).

"Unholy Word" has a very, very weak effect :(. However, increasing Blood reputation spells by 20% or more is a good bonus for the first level, compared to 2-3% for Necromancy at the first level of Tears reputation. That's why I recommend developing the Blood path for a Necropolis mage hero in single-player games and campaigns.