My first concept for Sabellian’s dragon form was pretty different from what I ended up going with. He would have been mutated like much of the rest of the fauna on Outland, warped when Draenor was torn apart. Nether crystals like those on the Nether Dragons would have collected on his scales, among other mutations. This would have weakened him considerably and he would have been much more weak in both body and spirit than he ended up as.
Though I liked the idea, I decided not to go with it because the disheveled, mutated and decrepit design didn’t even vaguely fit his personality, so I took away the weakness of his body, the crystals, and the mutations and added in the large, proud fins and big body structure later.
If you're still doin that pallet challenge, Alacian in 80!
behold, a baby