Sek'Kuar, Deathkeeper, Cryptolith Rite, Nether Traitor, and Ashnod's Altar

Prerequisites

• Sek'Kuar, Deathkeeper on the battlefield
• Cryptolith Rite on the battlefield
• Nether Traitor on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Nether Traitor, adding
2. Sek'Kuar triggers, creating a 3/1 Graveborn creature token creature with haste
3. Activate the Graveborn token using the ability from Cryptolith Rite by tapping it, adding
4. Activate Ashnod's Altar by sacrificing the Graveborn token, adding
5. Nether Traitor triggers, causing you to pay to return it from your graveyard to the battlefield
6. Activate Nether Traitor using the ability from Cryptolith Rite by tapping it, adding one mana of any color
7. Repeat

Results

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