Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Cultivator of Blades + Yahenni, Undying Partisan

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Cultivator of Blades

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Cultivator of Blades.
2. When Cultivator of Blades dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Cultivator of Blades enters, its fabricate ability triggers, putting a +1/+1 counter on it.
4. Resolve the Yahenni ability.
5. Repeat.

By tapping into the dual nature of Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, its back face grants persist to your other nontoken creatures, turning the graveyard into a revolving door. Cultivator of Blades takes full advantage of this by entering the battlefield with a -1/-1 counter that conveniently cancels out the +1/+1 counter from its fabricate ability, keeping its toughness safely above zero and allowing it to die repeatedly. Meanwhile, Yahenni, Undying Partisan acts as the willing executioner and safety valve, providing a free sacrifice outlet that fuels an endless loop of creature deaths and enters-the-battlefield triggers.