Activate Mystic Sanctuary and Dreamstone Hedron by tapping them, adding CCC.
Cast Ghostly Flicker either from your hand or from the top of your library by paying 2, blinking Mystic Sanctuary and Dreamstone Hedron.
When Mystic Sanctuary enters untapped, it triggers, putting Ghostly Flicker from your graveyard onto the top of your library.
Repeat.
This clever loop turns the battlefield into an engine by continuously recycling a single copy of Ghostly Flicker. By using Dreamstone Hedron to help fund the spell's mana cost alongside Mystic Sanctuary's blue production, you can repeatedly blink both permanents to generate an endless surplus of colorless mana. Every time Mystic Sanctuary returns to the battlefield untapped, its triggered ability places Ghostly Flicker right back on top of your library. From there, The Reality Chip makes casting the spell off the top of your library effortless, allowing you to repeat the cycle indefinitely.