Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot + Butcher Ghoul

Prerequisites

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Steps

1. 1Activate Umbral Collar Zealot by 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. 3Resolve the Umbral Collar Zealot ability.
4. 4Activate Umbral Collar Zealot by sacrificing Butcher Ghoul
5. 5When Butcher Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. 6Butcher Ghoul enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. 7Resolve the Umbral Collar Zealot ability from step 4.
8. 8Repeat from step 4.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite surveil