Satya, Aetherflux Genius, Éomer, Marshal of Rohan, and Primal Vigor

Prerequisites

• Satya, Aetherflux Genius on the battlefield
• Éomer, Marshal of Rohan on the battlefield
• Primal Vigor on the battlefield

Steps

1. Declare Satya as an attacker, triggering its ability, causing you to create two token copies of Éomer and causing you to get
2. Put both Éomer tokens into your graveyard due to the legend rule
3. Both Éomer tokens trigger, causing you to untap all creatures you control and to get two additional combat phases after this one
4. Repeat each combat phase

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite combat phases
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinite energy counters