The tool tip states:
While the Wild Spirits are active, each damaging ability you or your pet use against a target in the area will strike up to 5 nearby targets for (38.5% of Attack power) Nature damage.
So wildfire bomb would be affected? you throw it at a target or is this just bad grammar and implies a wrong conclusion
I really wish I could use venthyr as I like the idea of flayed shot but im reading its horrible outside of pvp