"From there we put the phials in a dark place and do not look, move or think about them until the next electrical storm. While waiting for the storm, each day at sunrise and sunset you must repeat the incantation " Amato, amino, animato, animagus ’ with your wand tip aimed at your own heart." Slughorn's words fell over them, the silent hush like a blanket, covering them all in shivers and sideways glances.