when I cast Fable of Wolf and Owl do both abilities trigger from casting itself?
when I cast Fable of Wolf and Owl do both abilities trigger from casting itself?
No.
To elaborate: Fable of Wolf and Owl couldn't possibly trigger from itself because its triggered abilities abilities don't function until it is on the battlefield. It doesnt enter the battlefield until after it has resolved, which is obviously long after it has been cast.
A 2nd Fable would trigger both of the abilities of a Fable that's already on the battlefield, but of course that isn't the same as what you were asking.