Bolas's Citadel + Dross Harvester + Golgari Thug + Phantom Train

B identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Phantom Train by sacrificing Golgari Thug.
  2. When Golgari Thug dies, it and Dross Harvester trigger.
  3. Resolve the Golgari Thug trigger, putting it from your graveyard onto the top of your library.
  4. Resolve the Dross Harvester trigger, causing you to gain 2 life.
  5. Resolve the Phantom Train ability.
  6. Cast Golgari Thug from the top of your library by paying 2 life.
  7. Repeat.

What the combo produces