Chord of Calling + Karmic Guide + Phantom Train + Preston, the Vanisher

Mana needed: {5}{G}{G}{G} at most

WBG identity

Commander legal

The 4 combo pieces

• Chord of Calling
• Karmic Guide
• Phantom Train
• Preston, the Vanisher

How to execute it

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

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite recursion of creature cards in your graveyard
• Infinite sacrifice triggers