[Autumn]

If its just a heal identical to graft its just a graft that prevents the use of mass (thats map wide and has benefits below a certain HP threshold), obviously it wouldn't heal a percentage to the priest themself otherwise it would just be a doomwall/spellthief tool.

I don't think this skill should be exempt from spellthieves however, as that'd make it too powerful as now it wouldn't be able to be stolen away from the priest for a tactical advantage, all you gotta do is make it scale properly so it doesn't become healing not tied to a stat, similar to how damage not tied to a stat pans out.