Looking for a cool spell!

The npc before you is called sylvester, he is a retail black market auction house npc with a unique feature, his very spiffy hat! But it’s not part of his model nor is it equipped, its a spell and I’m hoping someone may know what’s its called or know how to find it. I’m aware that there’s already a model of it that is equipable in game but I’m hoping that if I can find the spell it will appear in addition to whatever helm I already have equipped much like 262182 (Tophat).

Any help is appreciated!