Panoptic Mirror, Strionic Resonator, Ghostly Flicker, and Serra's Sanctum

Prerequisites

• Panoptic Mirror on the battlefield
• Strionic Resonator on the battlefield
• Ghostly Flicker in exile
• Serra's Sanctum on the battlefield
• undefined

Steps

1. At the beginning of your upkeep, Panoptic Mirror triggers
2. Holding priority, activate Serra's Sanctum by tapping it, 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 Ghostly Flicker without paying its mana cost
5. Resolve the copy of Ghostly Flicker, blinking Serra's Sanctum and Strionic Resonator
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite magecraft triggers
• Infinite landfall triggers
• Infinite white mana
• Infinite blinking of permanents you control
• Infinite mana permanents you control that enter the battlefield untapped can produce