what is the detailed effect about increase_duration + offering

2 offering skills have 3 parts of duration:base duration/increase duration per corpse/max duration

so would increase_duration + offering increase all 3 parts?

It doesn't make sense to say it has "three parts".

Base duration is 3 seconds. For each additional corpse you get 0.50 additional base duration (not increased duration). "Max duration" is not a stat, but maximum base duration comes from base duration + 8 corpses (which is the maximum amount of corpses the skill can consume): 3 seconds + 8x 0.50 seconds = 7 seconds.


Let's say you have it linked to level 10 Increased Duration (54%).

If you cast it with 1 corpse:
3s * 1.54 = 4.62 seconds

If you cast it with 1 + 4 corpses:
(3s + 4x 0.5s) * 1.54 = 7.7 seconds