Buff Levels?

I'm curious how you detect the level of an aura causing a buff on a unit? Like if someone has vampiric aura, how do you tell what level the aura was?

In my abilities and buffs I'm working on like, right now (just taking a break), uhhhhhhhhh... I don't need to know what levels my buffs are, exept for one skill I made a buff for levels 1-3, and another for skill level 4. Just copy the original and make one for each level. Then go to the ability and edit the buff used. Hope that helped.

I suppose that if there's only 1 unit with that ability, you could find the unit with the ability and check it's ability level.

Are buffs level-dependent? If they are then you could just make each level of the aura have a different buff.

Having a different buff per level was my first idea. The problem with that is they would stack, which a script could pick out the highest one, but the player would see more than one buff on the units. Sorta an irritation for me.