Got Battetron and then level 8 three hours ago with 489 ilevel. Reforged entirely to crit and mastery (no longer so) and used the two crit trinks (Jade Magistrate Figurine and Blossom of Pure Snow) -- so had massive crit procs for nearly thirty seconds per minute.
Would love to say any skill was involved, but just kept queuing until rng aligned and got lucky. Blizz needs to change this to a skill fight, or give booms symbiosis with shamans for a high uptime spiritwalker's grace (which my resto form already uses constantly with tranquility).
Half of this post makes 0 sense.