Timesifter, Draco, Isochron Scepter, Pull from Eternity, and Academy Ruins

Prerequisites

• Timesifter on the battlefield
• Draco in exile
• Isochron Scepter on the battlefield
• Pull from Eternity in exile
• Academy Ruins on the battlefield
• each turn available

Steps

1. Activate Isochron Scepter by paying and tapping it, casting a copy of Pull from Eternity without paying its mana cost
2. Resolve the copy of Pull from Eternity, putting Draco into your graveyard from exile
3. Activate Academy Ruins' second ability by paying and tapping it, putting Draco on top of your library from your graveyard
4. Move to the next turn
5. At the beginning of that turn's upkeep, Timesifter triggers, exiling the top card of each player's library, and causing you to take an extra turn after this one due to exiling the highest mana value card
6. Repeat

Results

• Infinite turns