Blood poisoning would be fun, but not overpowered... or how about "Unholy Thirst": Blood-9 blessed units gain an insatiable desire for blood, manifesting itself as an additional "Bite" attack=)
Oooh! I love it!
"Life After Death" with just an undead flag might be overpowered, though keeping afflictions caused by combat, or gaining a new affliction, or lowering the MR a couple points (easily banished) should make it OK. Also, with a mere undead attribute gained, the unit would require full upkeep, so no more "Kill the mages and make them free" tricks.
PvK: Blood Vengance is strong because low-MR attackers automatically kill themselves in droves. Summon or wish for a vastness, send it against an indy province, and just watch...
[ February 12, 2004, 23:40: Message edited by: Saber Cherry ]