I love Order of the stick but it have a problem, The Magic Energy

[Maximum Zersk]

I'm not sure if it's an exception or not, but when Xykon casts Cloister in #484 the dweomer appears yellow, which was Dorukan's colour, not Xykon's. It's a bit unclear whether that spell is something intrinsic to Dorukan's headband (e.g. it's an epic magic item) or whether the headband is just an aid to casting it, though.

I believe the headband supposed to be an epic magic item of sorts. I remember Dorukan's magic being yellow, though I could be wrong.