Ashnod's Altar + Cauldron of Souls + Corridor Monitor + Verdurous Gearhulk

GU identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Cauldron of Souls by tapping it, giving Verdurous Gearhulk and Corridor Monitor persist until end of turn.
  2. Activate Ashnod's Altar by sacrificing Corridor Monitor, adding {C}{C}.
  3. Corridor Monitor dies, triggering its persist ability, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
  4. Corridor Monitor enters the battlefield, untapping Cauldron of Souls.
  5. Activate Ashnod's Altar by sacrificing Verdurous Gearhulk, adding {C}{C}.
  6. Verdurous Gearhulk dies, triggering its persist ability, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
  7. Verdurous Gearhulk enters the battlefield, putting a +1/+1 counter on itself and Corridor Monitor, and two +1/+1 counters on any other creature(s) you control.
  8. Repeat.

What the combo produces