Isochron Scepter, Roar of the Kha, and Living Brain, Mechanical Marvel

Prerequisites

• Isochron Scepter on the battlefield
• Roar of the Kha in exile
• Living Brain, Mechanical Marvel on the battlefield

Steps

1. Animate Isochron Scepter using Living Brain
2. Activate any number of creatures by tapping them, adding at least
3. Activate Isochron Scepter by paying and tapping it, casting a copy of Roar of the Kha without paying its mana cost
4. Resolve Roar of the Kha, untapping all creatures you control Repeat from step 2

Results

• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control