This clever loop relies on the cost reduction of Emry, Lurker of the Loch to cast Delif's Cone straight from your graveyard for zero mana, feeding a relentless cycle of artifact movement. Every time you cast the Cone, Mirran Spy’s triggered ability untaps Emry so she can immediately tap to target the Cone once again after you sacrifice it. Because Delif's Cone is an artifact, its repeated casting and sacrifice effortlessly churn out infinite artifact entering-the-battlefield, leaving-the-battlefield, and sacrifice triggers, alongside an infinite storm count.