This clever setup transforms a simple discard into a self-sustaining loop of fiery retribution and deep rummaging. By activating Witch-king of Angmar, you send a card to your graveyard to grant it temporary protection, which in turn immediately alerts Glint-Horn Buccaneer to trigger its damage-dealing ability. That incoming burn seamlessly feeds Niv-Mizzet, Visionary, forcing you to draw fresh cards to hand—which conveniently keeps your ammunition fully stocked to pay for more Witch-king of Angmar activations.