Panoptic Mirror, Turnabout, and Strionic Resonator

Prerequisites

• Panoptic Mirror on the battlefield
• Turnabout in exile
• Strionic Resonator on the battlefield
• undefined

Steps

1. At the beginning of your upkeep, Panoptic Mirror triggers
2. Holding priority, activate any number of artifacts you control by tapping them, adding at least
3. Activate Strionic Resonator by paying and tapping it, copying Panoptic Mirror's trigger
4. Resolve the copy of Panoptic Mirror's trigger, casting a copy of Turnabout without paying its mana cost
5. Resolve the copy of Turnabout, untapping all artifacts you xontrol
6. Repeat from step 2

Results

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