Bhaal, Lord of Murder + Crystalline Crawler + Gravecrawler + Phantom Train

Bhaal, Lord of Murder

Crystalline Crawler

Gravecrawler

Phantom Train

How it works

1. Activate Phantom Train by sacrificing Gravecrawler.
2. When Gravecrawler dies, Bhaal triggers, putting a +1/+1 counter on Crystalline Crawler.
3. Resolve the Phantom Train ability
4. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding .
5. Cast Gravecrawler from your graveyard by paying .
6. Repeat.

This clever loop turns the undead persistence of Gravecrawler into an engine for endless growth and sacrifice. Phantom Train acts as the catalyst by consuming your looping zombie, while Bhaal, Lord of Murder watches the carnage and uses those death triggers to stack +1/+1 counters onto Crystalline Crawler. Whenever you need the black mana to recast Gravecrawler from your graveyard, Crystalline Crawler simply cashes in one of those newly gifted counters to pay for the journey, keeping the cycle spinning infinitely.