wow or diablo auras

Is there a good way to make diablo/wow stylee aura's? How you can only have 1 active at a time?

I tried using the spellbook, but all auras I put in it are just always on, ive seen a map before with basicily what I want, but kinda clunky, it was set so it was just a blank button, but everytime you clicked it the aura changed, if I only had 2 auras,this would be perfectly ok, but I have 9.
I want it so one aura is on(say thorns aura) I click the thorns button, and It will show the 8 others I can change to.

Well, whet you need to do, is to make a script, when a dummy ability is activated, it gives the unit aura, and removes all others (basically, the one that was active before).

That sounds like how the other person did it.
I want to be able to select it, and see it. Kind of like the spell book if it worked how I wanted.
it's one button only giving off 1 aura at a time, but when I click it, it opens up into all the auras I can change it to(like opening spell book'doing hero spells) I want to be able to see what Im switching to, not just a random, or next in line kind of deal

Ok, heres what you need to do; make a seperate spell book for each aura, and inside the spell book have each dummy ability. When one of them is cast it replaces the spell book with one with a different discription and icon.

It shouldnt be too hard for you to make

I've actually already done this in an old map, it's pretty simple:
Give the hero all the auras you want him to have and disable them for that player (this is best done when the player selects the hero).
Create a spell book skill with a dummy activate ability inside it for each aura.
Detect when a player casts the activate aura X ability; enable that aura for the player and disable all other auras.

Of course this only works if you only have one unit you are apply the aura to, as, by disabling and enabling for a player, you enable and disable for every unit that player owns...

True.

You could just add/remove the auras from the unit if you wanted multiple per player I guess.