Activated Sleeper, Karmic Guide, and Altar of Dementia

Prerequisites

• Activated Sleeper in hand
• Karmic Guide in the graveyard
• Altar of Dementia 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 Altar of Dementia by sacrificing Activated Sleeper, causing target player to mill cards equal to Activated Sleeper's power
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 Altar of Dementia by sacrificing Karmic Guide, causing target player to mill cards equal to Karmic Guide's power
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 death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill