It's not straightforward help, per se ... The Wildmother can be somewhat coy. I have the relative stock of my old abilities back though, I think.

[ Except now he gets some Paladin pizzazz on top to be extra fancy. ]

All you can do is keep on trying to do better —

[ The fake-Fjord illusion drops without warning as his hour is up; the eyes go back to orcish slits, horns and tail vanish, and the tiefling is abruptly tusk-toothed in his half-orc state again without realising. ]

— and eventually you'll get somewhere.