Timestream Navigator + Endless Evil + Lightning Greaves

3-card combo · U

Verdict

Yes — this 3-card engine produces infinite turns in mono-blue once the city's blessing is secured.

Cards required: 3
Cheapest stack total: $9.83
Color identity: U
Popularity: 71 decks
Format: Commander

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Endless Evil copies Timestream Navigator at each upkeep; Lightning Greaves equips to the token for free, granting haste so it can activate immediately for 2UU. The original Navigator stays on board, Endless Evil retriggers next upkeep, and the loop never stops. Blue tempo and control shells running Brainstorm and Mystical Tutor can assemble all three pieces without much friction.

Recipe

How it works

Prerequisites

Endless Evil attached to Timestream Navigator. You control nine permanents and/or have the city's blessing.

Steps

At the beginning of your upkeep, Endless Evil triggers, creating a token copy of Timestream Navigator.
If you do not have the city's blessing, both Timestream Navigator's ascend abilities trigger, giving you the city's blessing.
Activate Lightning Greaves' equip ability by paying , attaching it to the Timestream Navigator token.
Activate the Timestream Navigator token by paying , tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
Repeat each turn.

Result

Infinite turns; Lock

Variations

Cheaper, tighter, alternate lines

Swiftfoot Boots is a direct swap for Lightning Greaves if a hexproof backup is preferred, though its equip costs one mana instead of zero — that extra U matters if mana is tight. The city's blessing prerequisite is the real friction point; running Timestream Navigator in a shell that naturally floods the board with tokens, like a Talrand, Sky Summoner or Orvar, the All-Form deck, handles the ascend condition without extra setup.