Note that this WeakAura is no longer useful, as the spell got removed from the encounter.
IMPORTANT: This WeakAura does NOT automate finding the correct dispel target!
The dispel during the Attumen encounter in lower Karazahn can be quite hard to see at times. If somebody else sees the ghost on themselves, they can write in chat and this WeakAura will make their frame glow. This works especially well in combination with an aura helping dps/tanks notify you when they have the ghost on them, like for example this one: https://wago.io/7rwqRHSCm The frame glow means that you don't have to read player names in chat and then find their frame first.
Trigger words are "me", "ghost" and "dispel". Say, yell and party chat work.