Anafenza, Unyielding Lineage, Nether Traitor, and Phyrexian Altar

Prerequisites

• Anafenza, Unyielding Lineage on the battlefield
• Nether Traitor on the battlefield
• Phyrexian Altar on the battlefield

Steps

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

Results

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