Donate + Karlov Watchdog + Phantom Train + Yarus, Roar of the Old Gods

Mana needed: {2}{U}

WUBRG identity

Commander legal

The 4 combo pieces

What must be in place

You control a face-down creature whose front face is a permanent card.

How to execute it

  1. Donate Karlov Watchdog to an opponent.
  2. During the opponent's turn, activate Phantom Train by sacrificing a face-down creature you control.
  3. When the creature dies, Yarus's second ability triggers, returning it from your graveyard to the battlefield face-down as a 2/2 creature, and then not turning it face-up due to Karlov Watchdog.
  4. Resolve the Phantom Train ability.
  5. Repeat from step 2.

What the combo produces