Ketramose, the New Dawn, Toluz, Clever Conductor, Sheoldred, the Apocalypse, and Prognostic Sphinx

Prerequisites

• Ketramose, the New Dawn on the battlefield
• Toluz, Clever Conductor on the battlefield
• Sheoldred, the Apocalypse on the battlefield
• Prognostic Sphinx on the battlefield

Steps

1. Activate Prognostic Sphinx by discarding a card
2. Toluz's second ability triggers, exiling the discarded card from your graveyard
3. Ketramose triggers, causing you to draw a card and lose 1 life
4. Sheoldred triggers, causing you to gain 2 life
5. Resolve the Prognostic Sphinx ability
6. Repeat

Results

• Infinite self-discard triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Infinite draw triggers
• Exile your library
• Infinite rummaging