Gogo, Master of Mimicry, and Unstoppable Plan

Prerequisites

• Gogo, Master of Mimicry on the battlefield
• Unstoppable Plan on the battlefield

Steps

1. At the beginning of your end step, Unstoppable Plan triggers
2. Holding priority, activate any number of nonland permanents by tapping them, adding at least
3. Activate Gogo by paying and tapping it, copying Unstoppable Plan's trigger
4. Resolve the copy of Unstoppable Plan's ability, untapping all nonland permanents you control
5. Repeat from step 2

Results

• Infinite mana nonland permanents you control can produce
• Infinite untap of nonland permanents you control
• Infinite copies of abilities you control on the stack