[Edge]

I have questions about a couple Blood spells.

Calling a doom horror in battle, is it true it will attack troops from both sides? Does it focus on the summoner first, or is it totally random?
And Bloodletting, it will take 1 hp from everyone in the battlefield, does the mage recieve all those hp, and are they permenant?
What is the most useful Blood/battlefield spell in your opinion?

Thanks