Was doing Heroic Magister's Terrace earlier today, on what seemed to be a wipe on Kael I found a bug
Appearently if you start wanding him when he's casting gravity lapse you wont get any debuff, so no floating for you -> no damage taken.
If you dont take any dmg from that you can easily solo the entire Phase 2
I've managed to do it 2 times so far, if anyone can confirm it it'd be nice
//Lucyon
Edit: Fixed title as it was indeed a bit misleading