Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Blasting Station, and Relentless Skaabs

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Blasting Station on the battlefield
• Relentless Skaabs on the battlefield

Steps

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

Results

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