Guys, i have an idea for a portal-like Ability that can Change the Angle of Skillshots.

I have in mind: A portal gun-like guy that runs around with a portal gun, who can open up a portal for like 1 Second which changes the direction of all incoming skillshots AND makes them neutral (so it damages not only allies but opponents too!) i have so many funny plays in mind already . But what Problems do you guys see with it?

i think it would be pretty hard to balance , but not impossible! i would be grateful for some thoughts and replies !

Thanks :D