Castsequence wont work because if it can't cast mind freeze (ie: mob is out of range) it will never go on to strangulate.

The main reason I wanted it like I have it above is so it would first try to mind freeze and then if the mob is out of range it would use strangulate, but it always uses strangulate. Like I said though, it might use mind freeze also (if mind freeze doesn't trigger the GCD) - its hard to tell.