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

Prerequisites

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

Steps

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