decrep is absolutely mandatory for summoners killing bosses in hell, because bosses at the higher difficulties have a huge damage bonus multiplier on minions and mercs. the attack and movement speed malus are vital. as i already said, you still use amp damage for 90% of your fighting, but you use decrep on bosses to make your army last longer before they all die. you'll literally run out of mobs in the world to turn into revives/skeletons without it.
|