Assassination and Sacrifices

[SurvivalistMerc]

Two questions, not one, from a total newb.

1. Do you folks generally give items to your assassins when sending them out? And does an assassin get to take with him other stealth units for an assassination attempt?

2. Blood sacrifices: Do these create one-time or permanaent effects? If permanent, I could see that folks would want to do one at each fortress/temple location at the very least. (I am speaking of your dominion's radiating out from the area.)