Preston, the Vanisher + Altar of Dementia + Karmic Guide + Chord of Calling

Prerequisites

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Steps

1. 1Cast Chord of Calling by paying at most , searching your library for Karmic Guide and putting it onto the battlefield.
2. 2When Karmic Guide enters, it and Preston trigger.
3. 3Resolve the Karmic Guide trigger, returning an applicable target from your graveyard to the battlefield.
4. 4Holding priority, activate Altar of Dementia by sacrificing Karmic Guide.
5. 5Resolve the Preston trigger, creating a token copy of Karmic Guide that is a 0/1 Illusion.
6. 6When the Karmic Guide token enters, it triggers, returning Karmic Guide from your graveyard to the battlefield.
7. 7Repeat from step 2.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens
• Infinite death triggers
• Infinite mill
• Infinite recursion of creature cards in your graveyard
• Infinite self-mill