What happens next is quite unexpected, really. This 'Old One' suddenly gazes upon the face of madness, terror strikes him as no other. For there can only be one Great Old One, and this impostor is not Him. His mind snaps; his grip on reality dissolves. He is left standing in the snow, a gibbering mess. Paranoia floods his newly opened mind until he cannot trust even himself. Fear wraps itself around his heart until the very things he once loved are now frightful. Doubt is cast upon his thoughts until the most basic of objects now seem foreign and eldritch. This 'Old One', this madman, sees a fleeting glimpse of something in the snow and runs in terror, screaming about imminent death, attacking anything standing before him.