I don't think this is radius dependant, the aoe damage really doesn't go off if it kills a single target, here's a video as an example.
https://files.catbox.moe/i5vuud.mp4
https://files.catbox.moe/i5vuud.mp4
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Show posts Menu