Carrion Feeder + Hardened Academic + Lingering Tormentor

RWB identity

Commander legal

The 3 combo pieces

• Carrion Feeder
• Hardened Academic
• Lingering Tormentor

How to execute it

1. Activate Carrion Feeder by sacrificing Lingering Tormentor.
2. When Lingering Tormentor dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Hardened Academic triggers, putting a +1/+1 counter on Lingering Tormentor.
4. Resolve the Carrion Feeder ability.
5. Repeat.

What the combo produces

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