Penitence has a useless projectile currently. It does nothing at all, but apply a visual effect and play a sound on impact. The effect of Penitence (slow & incoming damage modifier) is applied instantly upon cast.

Either it should not use a projectile and be completely instant (like how it technically has been since forever), or it should apply its effects on projectile hit (which would be a nerf which he really doesn't need, right?).