Gogo, Master of Mimicry + The Fifth Doctor

WU identity

Commander legal

The 2 combo pieces

What must be in place

You control creatures that together can tap for at least {2} and didn't attack or enter this turn.
Gogo didn't enter this turn.

How to execute it

  1. At the beginning of your end step, The Fifth Doctor triggers.
  2. Holding priority, activate any number of creatures you control by tapping them, adding at least {2}.
  3. Activate Gogo by paying {2} and tapping it, copying The Fifth Doctor's trigger.
  4. Resolve the copy of The Fifth Doctor's trigger, untapping all creatures you control that didn't enter or attack this turn and putting a +1/+1 counter on them.
  5. Repeat from step 2.

What the combo produces