How it works
Prerequisites
- Creatures you control that have counters on them can tap to produce at least .
- Gogo has a counter on it.
Steps
- 1At the beginning of your end step, The Thirteenth Doctor triggers.
- 2Holding priority, activate any number of creatures you control that have counters on them by tapping them, adding at least .
- 3Activate Gogo by paying and tapping it, copying The Thirteenth Doctor's trigger.
- 4Resolve the copy of The Thirteenth Doctor's trigger, untapping all creatures you control that have a counter on them.
- 5Repeat from step 2.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Oddball tier?