10-18-2013, 02:46 PM
It's a bit more complicated than that. Discipline of War abilities seem to all be instant cast whereas Discipline of Magic abilities _mostly_ are non-instant (thus require stationary casts), regardless of what class they're on (so you can move while casting Flash on a THM but not Cure on a GLD).
Additionally, even abilities that require you to be stationary actually allow you to resume moving a little bit before they're done casting. This is most noticeable when quad-kiting- ie. running in circles keeping your instant cast DOTs up (eg. Aero) on ~4 mobs and occasionally stopping to (re)cast non-instant DOTs (eg. Thunder).
tl;dr summary: right before casting an ability that has a cast time, halt movement. Right before it's done casting, resume movement if needed.
Additionally, even abilities that require you to be stationary actually allow you to resume moving a little bit before they're done casting. This is most noticeable when quad-kiting- ie. running in circles keeping your instant cast DOTs up (eg. Aero) on ~4 mobs and occasionally stopping to (re)cast non-instant DOTs (eg. Thunder).
tl;dr summary: right before casting an ability that has a cast time, halt movement. Right before it's done casting, resume movement if needed.