it turns out the party would rather pin this thing down and inhale its spores to see what happens then actually complete the side-quest, but ok.
the mushroom guardian inhabits the spore fields, and lurks behind the cover of the large mushroom trees. the guardians body is hollow, and it pulsates and quivers constantly. barely sentient, the guardian tracks and hunts anything with a heartbeat, mindlessly ambling without turning its head to look where its going. the guardian is reminiscent of a zombie walking earth.