Something similar to Diablo 2’s Necromancer curses would be great. As it stands, you have to kinda guess the radius of the curses when a simple visual per cast would alleviate this entire issue.
You asked this same question about a week ago
http://www.grimdawn.com/forums/showthread.php?t=56203
That was to see if it could be modded into the game. This is in the Ideas and Feedback for Crate. Since a mod didn’t exist for this purpose, maybe Crate could find a way to implement this relatively easy. Since I don’t know how to mod this game and I’m not going to requisition a modder to do this, maybe Crate will throw it in somewhere down the line.
Fully agree +++++++++++