Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Sin, Unending Cataclysm + Ashnod's Altar
Infinite ETB, Infinite LTB, Infinite colorless mana, Infinite death triggers, Infinite sacrifice triggers, Infinite +1/+1 counters on creatures you control
Activate Ashnod's Altar by sacrificing the additional creature.
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Activate Ashnod's Altar by sacrificing Sin.
When Sin dies, it triggers twice.
Resolve the first trigger, returning Sin from your graveyard to the battlefield with a -1/-1 counter on it. As Sin enters, remove the -1/-1 counter from the creature sacrificed in step 1, causing Sin to enter with a +1/+1 co
Component Cards
How It Works
Activate Ashnod's Altar by sacrificing the additional creature.
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Activate Ashnod's Altar by sacrificing Sin.
When Sin dies, it triggers twice.
Resolve the first trigger, returning Sin from your graveyard to the battlefield with a -1/-1 counter on it
As Sin enters, remove the -1/-1 counter from the creature sacrificed in step 1, causing Sin to enter with a +1/+1 counter on it instead.
Resolve the second Sin trigger, putting the counters it had on it when it was sacrificed onto a creature you control and failing to shuffle it into your library as it's no longer in your graveyard.
Repeat.