The Doorway into Nightmare series remains near the tip top of my all time favorite covers, and Madame Xanadu one of my favorite characters. I enjoyed the 'maxi-series' a whole lot-- have even tried buying some of the original artwork, but it rapidly rises WAY out of my price-reach each time, alas. Never picked up The Spectre #11-- does Mde X figure prominently within, or merely appear in cameo?