Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Blasting Station, and Bifur, Melodic Rider

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Blasting Station on the battlefield
• Bifur, Melodic Rider on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Bifur
2. When Bifur dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Bifur enters, it and Blasting Station trigger
4. Resolve the Bifur trigger, putting a +1/+1 counter on it
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1 Repeat

Results

• Infinite +1/+1 counters on most creatures you control
• Infinite ETB
• Infinite LTB
• Infinite damage
• Infinite death triggers
• Infinite sacrifice triggers