Nobody survived my 25 man raid's first Elegon kill. He hit his enrage timer at sub 1%. The explosion killed literally everybody. Except I played a Blood DK and my Purgatory kept me up for 3 seconds. I hit him with two Strikes and DoTs from my fallen companions killed Elegon just as I expired.
The chest bugged out and wouldn't give us our loot (a GM later had to manually award our raid the loot after they confirmed our kill). But that was our first kill and we got to advance to Will of the Emperor.
Mumble was absolutely hilarious when it all went down. And I felt like a total badass being the only person standing against the boss even though I was technically dead.