Ketramose, the New Dawn, Containment Construct, Sheoldred, the Apocalypse, and Witch-king of Angmar

Prerequisites

• Ketramose, the New Dawn on the battlefield
• Containment Construct on the battlefield
• Sheoldred, the Apocalypse on the battlefield
• Witch-king of Angmar on the battlefield
• You have a card in hand
• Your life total is at least 2

Steps

1. Activate Witch-king of Angmar by discarding a card
2. Containment Construct triggers, exiling the discarded card with the ability to play it until end of turn
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 Witch-king of Angmar ability
6. Repeat

Results

• Infinite self-discard triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Infinite draw triggers
• Exile your library with the ability to play the exiled cards until end of turn