I think i got some to start off but i have two many of same kinda of similar and ran out i there shop or somewhere to go? Im talking about ones that allow your familiar to metamorphose into second form.
I found lot s in the volcano ( still there ) , maybe i m just lucky or i t s a gold mine for those . Found 1 of each in 10/15 min by just following the path . Does that place get unavailable once the quest over ? I ll farm a bit if it s the case .