During phase 2 of the Sindragosa fight, she flys into the air and targets 2 ppl and turns them into ice. heres where the exploit comes in.
they take some damage, well if healers such as druids hit the target with a rejuv and then a regrowth, even if the regrowth is still casting after they're hit by ice, they still get it.
So basicly you can heal them after they've became a huge otter pop, just have to start it before they get hit by it.
Did this in 10 man last night.