I am sure I know the answer but if Goldspan Dragon is countered, does it still create a treasure? Could you point me to the proper section that describes why or why not?
Goldspan Dragon's triggered ability won't trigger while it's a spell on the stack and becomes the target of another spell (such as Counterspell). This is because in general, an ability of an object (other than an instant or sorcery spell) doesn't work unless that object is on the battlefield (C.R. 113.6).
Neither does Goldspan Dragon's triggered ability trigger if Goldspan Dragon is countered.
Neither does Goldspan Dragon's triggered ability trigger if Goldspan Dragon is countered.