Necroduality, Not Dead After All, Phyrexian Altar, and Repository Skaab

Prerequisites

• Necroduality on the battlefield
• Not Dead After All in hand
• Phyrexian Altar on the battlefield
• Repository Skaab on the battlefield
• available

Steps

1. Cast Not Dead After All by paying , targeting Repository Skaab
2. Activate Phyrexian Altar by sacrificing Repository Skaab, adding
3. When Repository Skaab dies, it triggers, as well as any Wicked Role token(s) that may be attached to it
4. Resolve the Wicked Role trigger(s), if applicable, causing each opponent to lose that much life
5. Resolve the Repository Skaab trigger, returning it from your graveyard to the battlefield, then creating a Wicked Role token attached to it
6. When Repository Skaab enters the battlefield, its exploit ability and Necroduality trigger
7. Resolve the Necroduality trigger, creating a token copy of it
8. When the Repository Skaab token enters the battlefield, its exploit ability triggers; choose not to sacrifice a creature
9. Resolve the Repository Skaab trigger from step 4, sacrificing the Repository Skaab token
10. Repository Skaab's second ability triggers, returning Not Dead After All to your hand from your graveyard
11. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifeloss
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count