Seems surprisingly hard to find details on how this talent actually works.
1) If I have dots running on an enemy when it goes below 20%, will it proc the buff? Or does it require direct dmg?
2) After the proc happens, do dots need to be reapplied to gain benefit?
3) Say I have a bunch of mobs around me, that I'm AOE:ing with Mind Sear. Will the buff proc mid-channel as soon as the first enemy goes below 20%? Will the dmg on the Mind Sear update right away or does it need to be recast?
4) As long as you keep hitting something below 20%, does the 10 sec duration keep resetting to 10 all the time?