WoWDB

The medium-sized adds during Day Phase should be killed before they reach Tsulong, as they will inflict massive damage to him if they do. They can be slowed, snared, stunned, knocked back, and Death Gripped, but not hard CCed. We found it best to assign a DPS to each quadrant of the circle and have them focus on the adds there.

They damage themselves when they cast, so, while interrupting them mitigates some incoming raid damage, they will die faster if they are not interrupted.