Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Blasting Station, and Marionette Apprentice

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Blasting Station on the battlefield
• Marionette Apprentice on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Marionette Apprentice
2. When Marionette Apprentice dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Marionette Apprentice enters, its fabricate ability and Blasting Station trigger
4. Resolve the Marionette Apprentice 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
7. Repeat

Results

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