Ghostly Flicker, Mystic Sanctuary, Elsha of the Infinite, and Hedron Archive

Prerequisites

• Ghostly Flicker in hand or in the library
• Mystic Sanctuary on the battlefield
• Elsha of the Infinite on the battlefield
• Hedron Archive on the battlefield

Steps

1. Activate Mystic Sanctuary and Hedron Archive by tapping them, adding
2. Cast Ghostly Flicker either from your hand or from the top of your library by paying
3. Elsha's prowess ability triggers, giving it +1/+1 until end of turn
4. Resolve Ghostly Flicker, blinking Mystic Sanctuary and Hedron Archive
5. When Mystic Sanctuary enters untapped, it triggers, putting Ghostly Flicker from your graveyard onto the top of your library
6. Repeat

Results

• Infinite storm count
• Infinite magecraft triggers
• Infinite landfall triggers
• Infinitely large Elsha of the Infinite until end of turn