Sek'Kuar, Deathkeeper, Cryptolith Rite, Nether Traitor, and Viscera Seer

Prerequisites

• Sek'Kuar, Deathkeeper on the battlefield
• Cryptolith Rite on the battlefield
• Nether Traitor on the battlefield
• Viscera Seer on the battlefield

Steps

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

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1