Originally Posted by
FlaviusAetius
Guardian druid takes buff, pops Nature's Vigil (which lasts as long as the scorpion transformation), then goes scorpion. 25% of his DPS is now redirected to nearby allies as healing for the duration. The scorpion bursts for approximately 2 mil (probably more with lolcritoneverything bears), and so you now have a tank doing 2+ mil DPS and 500k+ HPS for the next 30 seconds.
So, yeah. Druids. Other tanks can do it too, but the outcome is slightly (if only slightly) less pants-on-head retarded. Pretty sure tanks taking the scorpion buff was very much an oversight by Blizzard - it effectively makes Paragons on par with Malkorok in terms of difficulty, IMO, at least on 10-man.