Slightly off-topic. It’s clunky, it’s single target, it’s underwhelming (pretty much most uniques and sub skills that LE has either because it’s bad scaling or just way too outdated). The SFX is kinda off visually where your mouse is. I made a post about this a few months ago. I haven’t played since, so I don’t know it it has become better to use now.
Anyways, yeah you’re right, the VFX is quite weird. It’s even weirder if you have the skill node where you cast/put it on fixed place and you walked away with it and it’s not hitting anything. I got a short video recording in my linked post. It’s really like a last-minute “make an item about Drain Life” Unique added in the game. I really like the item’s concept but really feels like it’s so badly implemented.