Panoptic Mirror, Strionic Resonator, Ghostly Flicker, and Grim Monolith

Prerequisites

• Panoptic Mirror on the battlefield
• Strionic Resonator on the battlefield
• Ghostly Flicker in exile
• Grim Monolith on the battlefield

Steps

1. At the beginning of your upkeep, Panoptic Mirror triggers
2. Holding priority, activate Grim Monolith by tapping it, adding
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 Grim Monolith and Strionic Resonator
6. Repeat from step 2

Results

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