Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Carrion Feeder + Arcbound Condor
Infinite ETB, Infinite sacrifice triggers, Infinite death triggers, Infinite +1/+1 counters on a creature, Infinite +1/+1 counters on certain creatures, Infinite LTB
Activate Carrion Feeder by sacrificing Arcbound Condor.
When Arcbound Condor dies, its modular ability and persist ability trigger.
Resolve the modular trigger, putting Arcbound Condor's +1/+1 counters on another artifact creature.
Resolve the persist trigger, returning Arcbound Condor from your graveyard to the battlefield. It will not have a -1/-1 counter on it due to its modular ability.
Resolve the Carrion Feeder ability.
Repeat.
Component Cards
How It Works
Activate Carrion Feeder by sacrificing Arcbound Condor.
When Arcbound Condor dies, its modular ability and persist ability trigger.
Resolve the modular trigger, putting Arcbound Condor's +1/+1 counters on another artifact creature.
Resolve the persist trigger, returning Arcbound Condor from your graveyard to the battlefield
It will not have a -1/-1 counter on it due to its modular ability.
Resolve the Carrion Feeder ability.
Repeat.