Just a heads up, Divine Stigma gives a pretty big stat boost, and it scales well with skills that have % attributes. You probably won’t feel much boost from Divine Stigma unless you level a % attribute on a skill fairly high.
However you need to constantly upkeep it, and mobs can resist it and you can almost never use it effectively in boss fights, which is all you’d probably want to use it for.
For grinding, it’s nice to have but needs upkeep, and for pvp it’s not viable. (Takes too long to cast, can resist, can cure, can miss, must kill that person within a few sec, etc)
If you can get it in, and get the buff for your party that’s great. But imo, it doesn’t have great practicality, I wouldn’t get more than 5 points in it, and that’s only because I can’t think of any other skill to put an extra 5 points in at Krivis C2. (Maybe Daino?)