Ashnod's Altar, Garna, the Bloodflame, Priest of Gix, and Priest of Urabrask

Prerequisites

• Ashnod's Altar on the battlefield
• Garna, the Bloodflame in hand or in the command zone
• Priest of Gix in hand
• Priest of Urabrask in hand
• plus enough mana to pay for commander tax, if applicable available

Steps

1. Cast Priest of Gix by paying
2. When Priest of Gix enters the battlefield, it triggers, adding
3. Activate Ashnod's Altar by sacrificing Priest of Gix, adding
4. Cast Priest of Urabrask by paying
5. When Priest of Urabrask enters the battlefield, it triggers, adding
6. Activate Ashnod's Altar by sacrificing Priest of Urabrask, adding
7. Cast Garna either from your hand or from the command zone by paying and commander tax, if applicable
8. When Garna enters the battlefield, it triggers
9. Holding priority, activate Ashnod's Altar by sacrificing Garna, adding
10. Resolve the Garna trigger, returning it, Priest of Gix and Priest of Urabrask from your graveyard to your hand
11. Repeat

Results

• Infinite black mana
• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite red mana
• Infinite sacrifice triggers
• Infinite storm count