Ok taht works for me. So 3 hd shroomlings have a chance of becomming a papa?
Well I'd think there'd be an element of age involved as well.
Anyhow, I think we'd better gather together the "Xs" we have so far:
Special Qualities: DR 5/cold iron, low-light vision
Environment: Any forest or underground
Organization: Solitary, hunting party (2-8), or circle (5-20 plus 1 gorri shroomling)
Challenge Rating: 1
Treasure: X [special goods & standard items?]
Alignment: Always neutral [or Always neutral, often chaotic?]
Advancement: 1-3 HD (Tiny)
Level Adjustment: +X?
Why should powers that work on plants work on shroomlings? They're fey.
I like Always neutral often chaotic.
And what do you mean by "special goods" in the proposed treasure?
And by special goods do you mean their poison quills?