Arcbound Tracker + Carrion Feeder + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

RWB identity

Commander legal

The 3 combo pieces

• Arcbound Tracker
• Carrion Feeder
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

How to execute it

1. Activate Carrion Feeder by sacrificing Arcbound Tracker.
2. When Arcbound Tracker dies, its modular ability and persist ability trigger.
3. Resolve the modular trigger, putting Arcbound Tracker's +1/+1 counters on another artifact creature.
4. Resolve the persist trigger, returning Arcbound Tracker from your graveyard to the battlefield. It will not have a -1/-1 counter on it due to its modular ability.
5. Resolve the Carrion Feeder ability.
6. Repeat.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite +1/+1 counters on certain creatures
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers