Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Yahenni, Undying Partisan, and Virtuous Variant

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Virtuous Variant on the battlefield

Steps

1. Activate Yahenni by sacrificing Virtuous Variant
2. When Virtuous Variant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Virtuous Variant enters, it triggers, putting a +1/+1 counter on it
4. Resolve the Yahenni ability
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers