Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Grim Poppet + Thermopod
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
Grim Poppet
Thermopod
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite red manaDestroy each creature that enters the battlefield under an opponent's controlDestroy any number of creaturesInfinite -1/-1 countersLock
How it works
If Grim Poppet has any -1/-1 counters on it, activate it by removing a -1/-1 counter from it.
Repeat step 1 as necessary until Grim Poppet has no -1/-1 counters on it.
Activate Thermopod by sacrificing Grim Poppet.
When Grim Poppet dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Repeat.
Resolve all Grim Poppet abilities, putting infinite -1/-1 counters on any number of creatures.
This loop turns a recycling engine into a devastating control mechanism, relying on Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight to grant persistent value to your board. While the front face gives your creature spells convoke, it's the transformed Isilu side that does the heavy lifting by bestowing persist onto Grim Poppet and your other nontoken creatures. When you strip away Grim Poppet's initial -1/-1 counters using its own activated ability to target opposing threats, you can then feed it to Thermopod's sacrifice ability for red mana. Because Isilu brings Grim Poppet right back to the battlefield with a single -1/-1 counter thanks to persist, you can continuously repeat this cycle to generate endless mana, triggers, and board wipes.