Good preparations. You approach the amphitheatre with the storm giants flanking you. The ruins are massive, clearly built by giants in ages past. Sand has filled the arena floor. As you enter through a crumbling archway, you see her. Iymrith in her true form. She is enormous, easily a hundred feet from snout to tail, with brilliant blue scales that crackle with electricity. She is coiled in the center of the amphitheatre, waiting for you.