[Idea] Shadow Fiend - Function of Wings

Shadow Fiend unleashes his wings when he preforms requiem of souls. But his wings are visual and don't serve any functional purpose. What if he is granted flying vision and pathing for maybe 5 (or variable at each level 3/4/5) seconds after ultimate (and the wings stay on). If the flying vision is too unbalanced, how about only flying pathing.

OR add the wings to the model (permanently) after he takes 1 level in presence of the dark lord, to make it more intimidating (like how animals make themselves bigger than they are to fight off predators). TL;DR - I want to see more wings