Make the Antidote Vessel reduce duration in percentages

[xelotex]

I think the Antidote Vessel would be more balanced if it reduced the effect duration in % rather than a fixed value. Not every effect should last 5 seconds only. Maybe a reduction of 50% or 70% in duration would be more balanced. And perhabs it should be configurable if the player wants the vessel to work in a fixed value or percentages