Nether Traitor, Ashnod's Altar, Sek'Kuar, Deathkeeper, and A Realm Reborn

Prerequisites

• Nether Traitor on the battlefield
• Ashnod's Altar on the battlefield
• Sek'Kuar, Deathkeeper on the battlefield
• A Realm Reborn on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Nether Traitor, adding Sek'Kuar triggers, creating a 3/1 Graveborn creature token creature with haste
2. Activate the Graveborn token using the ability granted by A Realm Reborn by tapping it, adding
3. Activate Ashnod's Altar by sacrificing the Graveborn token, adding Nether Traitor triggers, causing you to pay to return it from your graveyard to the battlefield
4. Activate Nether Traitor using the ability granted by A Realm Reborn by tapping it, adding
5. Repeat

Results

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