This looping engine transforms a standard sacrifice outlet into an infinite token factory by turning the entire battlefield into a mechanical playground. With Mycosynth Lattice weaving its ubiquitous passive magic, every permanent on the board becomes an artifact, meaning the tokens produced by Elemental Mastery's activated ability are now artifact creatures in addition to being elementals. When you sacrifice one of those newly minted metal minions to Yahenni, Undying Partisan, Dross Scorpion's shadow-forged trigger notices the death of an artifact creature and immediately untaps the enchanted creature. This allows you to tap the creature again to churn out another wave of haste-filled tokens, looping the process endlessly to bury your opponents under a mountain of sacrificial offerings and swinging bodies.