Dual Nature, Rot Hulk, and Carrion Feeder

Prerequisites

• Dual Nature on the battlefield
• Rot Hulk in hand
• Carrion Feeder on the battlefield
• available

Steps

1. Cast Rot Hulk by paying
2. Rot Hulk enters the battlefield, triggering itself and Dual Nature
3. Holding priority, activate Carrion Feeder by sacrificing Rot Hulk
4. Dual Nature's second ability triggers, exiling all tokens named Rot Hulk
5. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it
6. Resolve the Rot Hulk trigger from step 2, failing to return anything to the battlefield
7. Resolve the Dual Nature trigger from step 2, creating a token copy of Rot Hulk
8. The token copy of Rot Hulk enters the battlefield, returning Rot Hulk from your graveyard to the battlefield
9. Repeat from step 2

Results

• Infinite +1/+1 counters on Carrion Feeder
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Return all Zombies from your graveyard to the battlefield