This clever loop is centered around Emry, Lurker of the Loch, who uses her tap ability to continually pull Shield Sphere back out of your graveyard for zero mana. Because Shield Sphere is an artifact, it can be instantly fed to Umbral Collar Zealot's sacrifice ability to trigger its surveil effect while sending the Sphere back to the graveyard. Meanwhile, Thornbite Staff plays a silent yet crucial passive role: since Emry is naturally a Shaman, the Staff automatically equips to her and utilizes the constant creature deaths to untap her via its untap trigger. This creates a perpetual cycle of free casting and sacrificing that fills your graveyard and generates an infinite storm count.