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

Oblivion Ring and Sage of Mysteries on the battlefield.

Copy Enchantment and Estrid's Invocation in hand.

available

Cast Estrid's Invocation by paying .

Estrid's Invocation enters the battlefield as a copy of Oblivion Ring, triggering Sage of Mysteries and itself.

Resolve the Sage of Mysteries trigger, causing target player to mill two cards.

Resolve the Estrid's Invocation's trigger, exiling Oblivion Ring until it leaves the battlefield.

Cast Copy Enchantment by paying .

Copy Enchantment enters the battlefield as a copy of Estrid's invocation, triggering Sage of Mysteries and itself.

Resolve the Sage of Mysteries trigger, causing target player to mill two cards.

Resolve the Copy Enchantment's trigger, exiling Estrid's Invocation until it leaves the battlefield.

Estrid's Invocation leaves the battlefield, returning Oblivion Ring from exile to the battlefield.

Sage of Mysteries and Oblivion Ring triggers.

Resolve the Sage of Mysteries trigger, causing target player to mill two cards.

Resolve the Oblivion Ring's trigger, exiling Copy Enchantment.

Copy Enchantment leaves the battlefield, returning Estrid's Invocation from exile to the battlefield.

Repeat from step 2.

Infinite mill

Infinite self-mill