To be fair, the majority of specs and classes in TOR don't use a true rotation system, but more of a combination of ability priority systems and ability synergism. For example on live right now, Force Stun > Tumult are two abilities that work in synergy. Just like Weaken Mind > Force In Balance work well together, or how TKT can proc instant cast Mind Crushes. In summation you don't have to learn a "rotation" but it behooves you to learn the mechanics behind all of your abilities beyond what you read on the skill tooltips.
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