Phyrexian Altar + Not Dead After All + Repository Skaab + Necroduality

Phyrexian Altar

Not Dead After All

Repository Skaab

Necroduality

How it works

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.

This ingenious loop turns Repository Skaab into an endlessly recurring engine for your graveyard recursion spells. By targeting Repository Skaab with Not Dead After All before feeding it to Phyrexian Altar, you trigger both its return to the battlefield and the recycling of Not Dead After All back to your hand. Meanwhile, Necroduality ensures that every single return doubles your presence by generating token copies that can exploit and sustain the loop without bleeding your actual board dry.