Conjurer's Closet + Eternal Witness + Walk the Aeons

3-card combo · GU

Verdict

Yes — this 3-card loop takes infinite turns by recurring Walk the Aeons through Eternal Witness every end step.

Cards required: 3
Cheapest stack total: $7.92
Color identity: GU
Popularity: 84 decks
Format: Commander

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Conjurer's Closet triggers at each end step, blinking Eternal Witness and returning Walk the Aeons from the graveyard to hand; casting it for 3UU next turn restarts the chain. The loop is a clean Simic lock — once it's running, no other player takes another turn, and every end step generates a fresh ETB and LTB trigger for anything watching the board.

Recipe

How it works

Prerequisites

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Steps

Cast Walk the Aeons by paying , taking an extra turn after this one.
At the beginning of your end step, Conjurer's Closet triggers, blinking Eternal Witness.
Eternal Witness enters the battlefield, returning Walk the Aeons from your graveyard to your hand.
Repeat.

Result

Infinite ETB; Infinite LTB; Infinite turns; Lock

Variations

Cheaper, tighter, alternate lines

Crystal Shard and Erratic Portal do the same blinking work if Conjurer's Closet is destroyed, though both require mana activation instead of a free trigger. Strionic Resonator can copy the Closet's trigger to blink a second creature if the deck needs redundant ETB value alongside the lock.