Copy Enchantment + Mirrormade + Oblivion Ring + Altar of the Brood

Prerequisites

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Steps

1. 1Cast Mirrormade by paying .
2. 2Mirrormade enters the battlefield as a copy of Oblivion Ring, triggering Altar of the Brood and itself.
3. 3Resolve the Altar of Brood trigger, causing each opponent to mill a card.
4. 4Resolve the Mirrormade's trigger, exiling Oblivion Ring.
5. 5Cast Copy Enchantment by paying .
6. 6Copy Enchantment enters the battlefield as a copy of the Oblivion Ring copy, triggering Altar of the Brood and itself.
7. 7Resolve the Altar of Brood trigger, causing each opponent to mill a card.
8. 8Resolve the Copy Enchantment's trigger, exiling Mirrormade.
9. 9Mirrormade leaves the battlefield, triggering itself, returning Oblivion Ring from exile to the battlefield.
10. 10Altar of the Brood and Oblivion Ring trigger.
11. 11Resolve the Altar of Brood trigger, causing each opponent to mill a card.
12. 12Resolve the Oblivion Ring trigger, exiling Copy Enchantment.
13. 13Copy Enchantment 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