1) If your mouseover is a friendly, it will decurse them
2) Else, if your target is a friendly, it will decurse them
3) Else, it will decurse yourself.
If you're not into partytarget macros then this is perfect for you.
This macro saves you a lot of time when you're casting say a Frostbolt on someone and you just have to mouseover your teammates portrait and hit Remove Curse rather than having to target the guy to dispel him then going back to your target.
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