Nightfall visual concept

First off, I think the visual effect for the Nightfall passive on Duskblade is fine and doesn't NEED to be changed. This is just an idea I had.

I was just thinking of this item as a singularity (or a black hole) being created on the champion and as it builds in mass over 2 seconds it will either deal massive damage to the target (meaning they had enough health to survive it), or they are too weak to avoid getting sucked in.

I think this would be awesome, and to make it even better it should cancel and override the targets death animation to make their model disappear completely.

Ultimately, I don't honestly see this happening with Duskblade. ... but what if there were a new item that does essentially the same thing but is magic damage. ....?