Panoptic Mirror + Strionic Resonator + Ghostly Flicker + Brass Infiniscope

Panoptic Mirror

Strionic Resonator

Ghostly Flicker

Brass Infiniscope

How it works

1. At the beginning of your upkeep, Panoptic Mirror triggers.
2. Holding priority, activate Brass Infiniscope by tapping it, adding CC.
3. Activate Strionic Resonator by paying 2 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 Brass Infiniscope and Strionic Resonator.
6. Repeat from step 2.

This brilliant engine starts when Panoptic Mirror triggers during your upkeep, thanks to a previously imprinted copy of Ghostly Flicker. By tapping Brass Infiniscope, you generate the mana needed to activate Strionic Resonator, which copies that upkeep trigger to cast yet another free instance of Ghostly Flicker. That blink effect resets both the Infiniscope and the Resonator, allowing you to repeat the loop indefinitely while drawing your entire deck and gaining massive amounts of life along the way.