Karmic Guide + Body Double + Phantom Train

Karmic Guide

Body Double

Phantom Train

How it works

1. Cast Body Double by paying 4, choosing to have it enter the battlefield as a copy of Karmic Guide.
2. When Body Double enters the battlefield, it triggers, targeting Karmic Guide.
3. Holding priority, activate Phantom Train by sacrificing Body Double.
4. Resolve the Body Double trigger, returning Karmic Guide from your graveyard to the battlefield.
5. When Karmic Guide enters the battlefield, it triggers, targeting Body Double.
6. Holding priority, activate Phantom Train by sacrificing Karmic Guide.
7. Resolve the Karmic Guide trigger, returning Body Double from your graveyard to the battlefield as a copy of Karmic Guide.
8. Repeat from step 2.

This clever loop puts Karmic Guide and Body Double into a perpetual mutual rescue cycle, leveraging the graveyard to bypass the usual limitations of entering the battlefield. The secret glue holding this recursive engine together is Phantom Train, which gives you a convenient way to sacrifice your creatures right in response to their own enter-the-battlefield triggers. By feeding them into the Vehicle one after another, you can endlessly trigger death effects, sacrifice triggers, and creature arrivals while stacking infinite +1/+1 counters onto Phantom Train itself.