Requires

Activated Sleeper must be in hand. Karmic Guide must be on the battlefield. Ashnod's Altar must be on the battlefield. Mana needed:

Steps

1. Activate Ashnod's Altar by sacrificing Karmic Guide, adding .
2. Cast Activated Sleeper by paying , choosing to have it enter the battlefield as a copy of Karmic Guide.
3. Activated Sleeper enters the battlefield, targeting Karmic Guide.
4. Holding priority, activate Ashnod's Altar by sacrificing Activated Sleeper, adding .
5. Resolve the Activated Sleeper trigger, returning Karmic Guide from your graveyard to the battlefield.
6. Karmic Guide enters the battlefield, targeting Activated Sleeper.
7. Holding priority, activate Ashnod's Altar by sacrificing Karmic Guide, adding .
8. Resolve the Karmic Guide trigger, returning Activated Sleeper from your graveyard to the battlefield as a copy of Karmic Guide.
9. Repeat from step 3.

Results