Copy Enchantment + Estrid's Invocation + Oblivion Ring + Sage of Mysteries

Prerequisites

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Steps

1. 1Cast Estrid's Invocation by paying .
2. 2Estrid's Invocation enters the battlefield as a copy of Oblivion Ring, triggering Sage of Mysteries and itself.
3. 3Resolve the Sage of Mysteries trigger, causing target player to mill two cards.
4. 4Resolve the Estrid's Invocation's trigger, exiling Oblivion Ring until it leaves the battlefield.
5. 5Cast Copy Enchantment by paying .
6. 6Copy Enchantment enters the battlefield as a copy of Estrid's invocation, triggering Sage of Mysteries and itself.
7. 7Resolve the Sage of Mysteries trigger, causing target player to mill two cards.
8. 8Resolve the Copy Enchantment's trigger, exiling Estrid's Invocation until it leaves the battlefield.
9. 9Estrid's Invocation leaves the battlefield, returning Oblivion Ring from exile to the battlefield.
10. 10Sage of Mysteries and Oblivion Ring triggers.
11. 11Resolve the Sage of Mysteries trigger, causing target player to mill two cards.
12. 12Resolve the Oblivion Ring's trigger, exiling Copy Enchantment.
13. 13Copy Enchantment leaves the battlefield, returning Estrid's Invocation from exile to the battlefield.
14. 14Repeat from step 2.

Effects

• Infinite mill
• Infinite self-mill