I’ve seen it alot in youtube videos this expansion. Xaryu, Mitch Jones etc.
I see the mage DB, then poly, then ring, step back, and combust the same target. I wasn’t sure what the benefit was, or if they even shared the same DR
Perhaps it’s just for the legendary then? Or to prevent them from running once the poly is broke? Though usually they’d be out of the CC by the time meteor/GP hits… so I dunno