Activated Sleeper, Karmic Guide, and Carrion Feeder

Prerequisites

• Activated Sleeper in hand
• Karmic Guide in the graveyard
• Carrion Feeder on the battlefield
• available

Steps

1. Cast Activated Sleeper by paying , choosing to have it enter the battlefield as a copy of Karmic Guide
2. Activated Sleeper enters the battlefield, targeting Karmic Guide
3. Holding priority, activate Carrion Feeder by sacrificing Activated Sleeper, putting a +1/+1 counter on Carrion Feeder
4. Resolve the Activated Sleeper trigger, returning Karmic Guide from your graveyard to the battlefield
5. Karmic Guide enters the battlefield, targeting Activated Sleeper
6. Holding priority, activate Carrion Feeder by sacrificing Karmic Guide, putting a +1/+1 counter on Carrion Feeder
7. Resolve the Karmic Guide trigger, returning Activated Sleeper from your graveyard to the battlefield as a copy of Karmic Guide
8. Repeat from step 2

Results

• Infinite +1/+1 counters on Carrion Feeder
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers