Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Blasting Station + Butcher Ghoul

Prerequisites

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Steps

1. 1Activate Blasting Station by tapping it and sacrificing Butcher Ghoul
2. 2When Butcher Ghoul dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. 3When Butcher Ghoul enters, Blasting Station triggers, untapping Blasting Station.
4. 4Resolve the Blasting Station ability from step 1.
5. 5Activate Blasting Station by tapping it and sacrificing Butcher Ghoul
6. 6When Butcher Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
7. 7Butcher Ghoul enters and dies as a state-based action due to having 0 toughness. Its undying ability and Blasting Station trigger.
8. 8Resolve the undying trigger, returning Butcher Ghoul from your graveyard to the battlefield with a +1/+1 counter on it.
9. 9When Butcher Ghoul enters, Blasting Station triggers. Resolve both triggers from this step and step 7, untapping Blasting Station.
10. 10Resolve the Blasting Station ability from step 5.
11. 11Repeat from step 5.

Effects

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite untap of creatures you control