Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Phantom Train, and Cultivator of Blades

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Phantom Train on the battlefield
• Cultivator of Blades on the battlefield

Steps

1. Activate Phantom Train by sacrificing Cultivator of Blades
2. When Cultivator of Blades dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Cultivator of Blades enters, its fabricate ability triggers, putting a +1/+1 counter on it
4. Resolve the Phantom Train ability
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on a creature