Clever Impersonator + Mirrormade + Oblivion Ring + Sage of Mysteries

Prerequisites

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Steps

1. 1Cast Mirrormade by paying .
2. 2Mirrormade enters the battlefield as a copy of Oblivion Ring, triggering Sage of Mysteries and itself.
3. 3Resolve the Altar of Brood trigger, causing target player to mill two cards.
4. 4Resolve the Mirrormade's trigger, exiling Oblivion Ring.
5. 5Cast Clever Impersonator by paying .
6. 6Clever Impersonator enters the battlefield as a copy of the Oblivion Ring copy, triggering Sage of Mysteries and itself.
7. 7Resolve the Altar of Brood trigger, causing target player to mill two cards.
8. 8Resolve the Clever Impersonator's trigger, exiling Mirrormade.
9. 9Mirrormade leaves the battlefield, triggering itself, returning Oblivion Ring from exile to the battlefield.
10. 10Sage of Mysteries and Oblivion Ring trigger.
11. 11Resolve the Altar of Brood trigger, causing target player to mill two cards.
12. 12Resolve the Oblivion Ring trigger, exiling Clever Impersonator.
13. 13Clever Impersonator leaves the battlefield, returning Mirrormade from exile to the battlefield.
14. 14Repeat from step 2 until each opponent has an empty library, then end the loop by choosing to copy or exile any other permanent.

Effects

• Infinite mill
• Infinite self-mill