Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Grim Poppet + Bartolomé del Presidio

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

Grim Poppet

Bartolomé del Presidio

How it works

1. If Grim Poppet has any -1/-1 counters on it, activate it by removing a -1/-1 counter from it.
2. Repeat step 1 as necessary until Grim Poppet has no -1/-1 counters on it.
3. Activate Bartolomé del Presidio by sacrificing Grim Poppet.
4. When Grim Poppet dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve the Bartolomé del Presidio ability.
6. Repeat.
7. Resolve all Grim Poppet abilities, putting infinite -1/-1 counters on any number of creatures.

This loop relies on the interaction between Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight and Grim Poppet to continuously cycle the Poppet through the graveyard. When Isilu, Carrier of Twilight is active, Grim Poppet gains persist, allowing it to return from the dead with a single -1/-1 counter whenever Bartolomé del Presidio sacrifices it. Before making that sacrifice, you use Grim Poppet's activated ability to strip away all of its starting -1/-1 counters, ensuring that its persist trigger will successfully fire upon death and fuel Bartolomé del Presidio's growth indefinitely.