This clever loop relies on Melira, Sylvok Outcast and her passive ability to completely negate the drawback of persist, allowing Wingrattle Scarecrow to return from the graveyard without ever receiving a -1/-1 counter. By repeatedly sacrificing that Scarecrow to Arcbound Ravager, you feed the Ravager a steady stream of artifact sacrifices to grow its power while triggering an endless cycle of leaves-the-battlefield, entry, and death triggers. The Modular ability of the Ravager can then be leveraged to concentrate all those accumulated counters wherever you need them most, turning an un-stoppable mechanical cycle into an overwhelming board state.