Basically, the Slow sets and they're not much to look at as it's pretty rare to put more than a couple of slots into CE.
So, unless you can really spare the extra slots, I wouldn't look at CE too closely for IO Sets.
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aww... was kinda hoping there'd be something with a damage proc in it 
There is: Impeded Swiftness: 20% chance of minor smashing damage
There is also Pacing of the Turtle: chance of -recharge
Nether is currently working, since CE is an untargeted aoe, but I expect the fix to come soon (it is fixed on US test).
I really should do something about this signature.
awesome! i'll have to have a look at those =D
basically, this does exactly what it says on the tin...
i've been playing with the multi-attrib enhances etc.. but i can't work out what can be slotted into chilling embrace.
does anyone know?