Helm of the Host + Omarthis, Ghostfire Initiate + Vanquisher's Banner

C identity

Commander legal

The 3 combo pieces

• Helm of the Host
• Omarthis, Ghostfire Initiate
• Vanquisher's Banner

What must be in place

You have a way to put a +1/+1 counter on a colorless creature you control.
"Spirit" or "Naga" chosen with Vanquisher's Banner.

How to execute it

1. At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Omarthis with haste.
2. Put a +1/+1 counter on the Omarthis token or another colorless creature you control.
3. The nontoken Omarthis triggers, putting a +1/+1 counter on itself.
4. The Omarthis token triggers, putting a +1/+1 counter on itself.
5. Repeat from step 3.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite +1/+1 counters on a creature token with haste