Nether Traitor, Woe Strider, Sek'Kuar, Deathkeeper, and A Realm Reborn

Prerequisites

• Nether Traitor on the battlefield
• Woe Strider on the battlefield
• Sek'Kuar, Deathkeeper on the battlefield
• A Realm Reborn on the battlefield

Steps

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

Results

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