Dour Port-Mage + Time Warp + Eternal Witness

3-card combo · GU

Verdict

Yes — this 3-card loop chains infinite extra turns in any green-blue shell that can sustain the mana each cycle.

Cards required

Cheapest stack total

$33.89

Color identity

Popularity

235 decks

Format

Commander

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Time Warp goes to the graveyard after resolution; Eternal Witness enters and returns it to hand, then Dour Port-Mage pays 1U to bounce Eternal Witness back and draw a card to reset the loop. The mana ask is real — Time Warp costs 3UU and Eternal Witness costs 1GG each turn, so the engine only goes infinite with enough mana rocks or land untap effects already on board. Aesi, Tyrant of Gyre Strait and Rashmi, Eternities Crafter are the natural commanders since they generate card and mana advantage while these pieces assemble.

How it works

Prerequisites

available plus enough mana to cast Time Warp and Eternal Witness each turn.

Steps

Cast Time Warp by paying its mana cost, causing you to take an extra turn after this one.
Cast Eternal Witness by paying its mana cost.
When Eternal Witness enters the battlefield, it triggers, returning Time Warp from your graveyard to your hand.
Move to your next turn.
Activate Dour Port-Mage by paying and tapping it, returning Eternal Witness from the battlefield to your hand.
Dour Port-Mage triggers, causing you to draw a card.
Repeat.

Result

Infinite turns; Lock

Cheaper, tighter, alternate lines

Archaeomancer is a budget-accessible substitute for Eternal Witness that performs the same graveyard recursion without the broader utility. Recursion targets for Time Warp can also be Walk the Aeons or Temporal Manipulation if Time Warp is unavailable. The loop produces a draw each cycle via Dour Port-Mage, so it incidentally digs toward a closer like Thassa's Oracle if the library runs low.

Dour Port-Mage + Time Warp + Eternal Witness

How it works

Cheaper, tighter, alternate lines

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