Remembrance + Mortuary + Crookshank Kobolds + Phantom Train

Remembrance

Mortuary

Crookshank Kobolds

Phantom Train

How it works

1. Activate Phantom Train by sacrificing Crookshank Kobolds.
2. When Crookshank Kobolds dies, Mortuary and Remembrance trigger.
3. Resolve the Mortuary trigger, putting Crookshank Kobolds from your graveyard on top of your library.
4. Resolve the Remembrance trigger, searching your library for Crookshank Kobolds and putting it into your hand.
5. Resolve the Phantom Train ability.
6. Cast Crookshank Kobolds by paying 0.
7. Repeat.

This clever engine loops free zero-mana creatures by turning Phantom Train's sacrifice outlet into an infinite supply of +1/+1 counters. Whenever you sacrifice Crookshank Kobolds to fuel Phantom Train, Mortuary instantly intercepts the dying creature to place it on top of your library. Simultaneously, Remembrance capitalizes on the death trigger to tutor another copy of the exact same creature straight into your hand, allowing you to cast it again for free and repeat the entire cycle.