Karmic Guide + Sister Hospitaller + Phantom Train

Karmic Guide

Sister Hospitaller

Phantom Train

How it works

1. Cast Karmic Guide by paying 3.
2. When Karmic Guide enters, it triggers, targeting Sister Hospitaller.
3. Holding priority, activate Phantom Train by sacrificing Karmic Guide.
4. Resolve the Karmic Guide ability, returning Sister Hospitaller from your graveyard to the battlefield.
5. When Sister Hospitaller enters, it triggers, targeting Karmic Guide.
6. Holding priority, activate Phantom Train by sacrificing Sister Hospitaller.
7. Resolve the Sister Hospitaller ability, returning Karmic Guide from your graveyard to the battlefield and causing you to gain 5 life.
8. Repeat from step 2.

This clever loop relies on a continuous resurrection cycle between Karmic Guide and Sister Hospitaller, each bringing the other right back out of your graveyard the moment they enter the battlefield. Phantom Train acts as the crucial sacrifice outlet that feeds itself, converting every iteration into a growing +1/+1 counter threat while neatly sending your looping creatures back to the graveyard to be retrieved. Along the way, Sister Hospitaller's triggered ability capitalizes on the action by fueling your life total with massive chunks of infinite lifegain.