Cathars' Crusade + Cauldron of Souls + Corridor Monitor + Viscera Seer

WUB identity

Commander legal

The 4 combo pieces

What must be in place

Corridor Monitor does not have a -1/-1 counter on it.

How to execute it

  1. Activate Cauldron of Souls by tapping it, giving Corridor Monitor persist until end of turn.
  2. Activate Viscera Seer by sacrificing Corridor Monitor.
  3. When Corridor Monitor dies, its persist ability triggers, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
  4. When Corridor Monitor enters the battlefield, it and Cathars' Crusade trigger.
  5. Resolve the Corridor Monitor trigger, untapping Cauldron of Souls.
  6. Resolve the Cathars' Crusade trigger, putting a +1/+1 counter on each creature you control.
  7. Resolve the Viscera Seer ability from step 2, causing you to scry 1.
  8. Repeat.

What the combo produces