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

Not Dead After All in hand.

All other permanents on the battlefield.

available

Cast Not Dead After All by paying , targeting Repository Skaab.

Activate Phyrexian Altar by sacrificing Repository Skaab, adding .

When Repository Skaab dies, it triggers, as well as any Wicked Role token(s) that may be attached to it.

Resolve the Wicked Role trigger(s), if applicable, causing each opponent to lose that much life.

Resolve the Repository Skaab trigger, returning it from your graveyard to the battlefield, then creating a Wicked Role token attached to it.

When Repository Skaab enters the battlefield, its exploit ability and Necroduality trigger.

Resolve the Necroduality trigger, creating a token copy of it.

When the Repository Skaab token enters the battlefield, its exploit ability triggers; choose not to sacrifice a creature.

Resolve the Repository Skaab trigger from step 4, sacrificing the Repository Skaab token.

Repository Skaab's second ability triggers, returning Not Dead After All to your hand from your graveyard.

Repeat.

Infinite death triggers

Infinite creature ETB

Infinite lifeloss

Infinite creature LTB

Infinite magecraft triggers

Infinite creature sacrifice triggers

Infinite storm count