It is a simple modification of Grom skin, I was inspired in Y'shaarj (an old god), the corrupted gorehowl (Grom / Garrosh Hellscream weapon), the Kor'kron guard, and Malkorok.
If you want that the eyes of the blademaster glowing in the portrait, put this texture on "Chaos Hellscream",
In the war 3 model editor you can change the glowing color (windows, node manager, and double click the "blizzparticle", to select the glow color).
Keywords:
Orc, Blademaster, Corrupted, Sha, Y'shaarj, Grom, Grommash, Garrosh, Hellscream, Kor'kron, Warsong