[Finding him quickly is likely a good first step. If at first he was at least somewhat glad for a way to get out some aggression - finally, something to kill! - the profound use of magic and blood magic on top of that, and on top of that everyone being so damn willing to use blood magic, has left him pretty much entirely too rattled. Couple that with injuries sustained from all those attacks, and you have one shaken up guy.]
[Who's also setting out to find Dorian as soon as he comes back to himself. alsdhgasd; where'd you go, big guy. Thankfully he's level-headed enough to remember the crystal, which is why Dorian will soon feel/see it glowing]