Can someone please explain how the rune interacts with the horrid decrepify skill, aka:
Is it possible for the rune to activate the abhorrent (not the one mentioned in the rune) decrepify if i have selected that in my skill tree? If yes, do I also need it to be present in my skills bar?
Regarding the sacrilegious ring, similar question, do i need to have the corpse explosion and corpse tendrils skills unlocked in my skill tree AND to be present in my skills bar, so that they can be automatically activated by the ring?
What version of the corpse tendril will be automatically cast by the ring? The one unlocked by me (e.g. blighted corpse) or the ‘base’ version?
yes, in effect the rune proc will have both affects horrid and abhorrent.
no
as long as you have the skills on your bars it will use them, it will not cast skills not on your bars. However if you are getting skills from items you could in theory not alocate any skill points to your skill tree.
if you have points allocated in your skill tree for spells this ring casts, it will use whatever upgrades and ranks those skills have. So yes it could cast a blighted corpse explosion with whatever rank your corpse explosion has eg 1/5 or 20/5 etc.