Before the Helm of Nabu transformed people into the mystical superhero Doctor Fate, it was the 100% cotton Dr. Fate Stars Yellow T-Shirt! That Nabu was always a big fan of short sleeved shirts for some reason...nobody ever quite figured it out. There might even be some magic left in the retro artwork of Doctor Fate surrounded by a burst of stars on the Dr. Fate Stars Yellow T-Shirt. You'll have to check though; I lost my ability to quantify magic after the Spectre banished me to a frozen mountain during the Day of Judgement.