Damage Aura question

Damage Aura question

How can I make an aura that after X seconds it damages the units around, oh let's say, an AoE of 300 (and for the next lvls of the spells, it damages them more)?

I believe all you have to do is get immolation, set the AOE(I believe you can with immolation, too lazy to check) and then change the fireball thing into your aura at origin. To make it a real aura you would have to create a trigger that made it always on, or just make it with the item one, so its passive.

Well... There is this guy who already made a similar aura. Search for a Fire Aura from diablo...

~Daelin