Portcullis + Ranar the Ever-Watchful

WU identity

Commander legal

The 2 combo pieces

What must be in place

At least one additional creature on the battlefield.
You have a way to cause a creature to enter the battlefield.

How to execute it

  1. Cause a creature to enter the battlefield.
  2. Portcullis triggers, exiling the creature.
  3. Ranar triggers, creating a 1/1 Spirit creature token with flying.
  4. Portcullis triggers, exiling the Spirit.
  5. Repeat from step 2.

What the combo produces