Carrion Feeder, Faceless Butcher, and Rescue Skiff

Prerequisites

• Carrion Feeder on the battlefield
• Faceless Butcher in hand
• Rescue Skiff on the battlefield
• available

Steps

1. Cast Faceless Butcher by paying its mana cost
2. When Faceless Butcher enters, its first ability triggers, exiling Rescue Skiff
3. Activate Carrion Feeder by sacrificing Faceless Butcher
4. When Faceless Butcher dies, its second ability triggers, returning Rescue Skiff from exile to the battlefield
5. When Rescue Skiff enters, it triggers, returning Faceless Butcher from your graveyard to the battlefield
6. When Faceless Butcher enters, its first ability triggers, exiling Rescue Skiff
7. Resolve the Carrion Feeder ability
8. Repeat from step 3

Results

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