Nether Traitor + Phyrexian Altar + Sifter of Skulls

Prerequisites

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Steps

1. 1Activate Phyrexian Altar by sacrificing Nether Traitor, adding .
2. 2When Nether Traitor dies, Sifter of Skulls triggers, creating a creature token.
3. 3Activate Phyrexian Altar by sacrificing the creature token, adding one mana of any color.
4. 4When the creature token dies, Nether Traitor triggers, causing you to pay to return Nether Traitor from your graveyard to the battlefield.
5. 5Repeat.

Effects

• Infinite colored mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers