The Duskblade "mark" needs to be more visible

Not an OP pls nerf thread; the item is fine as it is but currently it doesn't leave behind any visual or audio cues as to who it is currently marked upon so I can't react to it until well.. the damage goes off. Can Duskblade leave some kind of visual indication next the champion that's marked kinda like how the black cleaver armor shred does? That's a good way of making it visible without interfering with the visual queues of something like a Zed or Vlad ult. That way carries/peelers have a way or reacting and assassins with aoe damage like Talon can keep track of which enemy their mark is currently on. All around, I think everyone would be happier off.