Krark-Clan Ironworks + Urza, Lord High Artificer Combos

4 known combos featuring both cards in Commander

Infinite colorless mana Exile your library Cast all spells in your library Infinite LTB Infinite ETB

Combo 1 with Deadeye Navigator

Also requires: Deadeye Navigator Deadeye Navigator
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite colorless mana · Exile your library · Cast all spells in your library · Infinite creature tokens
Steps
  1. Activate Urza by paying {1}{U}, blinking it.
  2. When Urza enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
  3. Resolve the Deadeye Navigator trigger, repairing it and Urza.
  4. Resolve the Urza trigger, creating a 0/0 Construct artifact creature token.
  5. Activate Urza's first ability by tapping the Construct, adding {U}.
  6. Activate Krark-Clan Ironworks by sacrificing the Construct, adding {C}{C}.
  7. Repeat.

Combo 2 with Emry, Lurker of the Loch + Sewer-veillance Cam

Results: Cast all spells in your library · Exile your library · Infinite blue mana · Infinite colorless mana · Infinite mana creatures you control can produce · Infinite storm count · Infinite untap of creatures you control · Infinite card draw · Infinite draw triggers
Show steps
  1. Activate Emry by tapping it, allowing you to cast Sewer-veillance Cam from your graveyard this turn.
  2. Cast Sewer-veillance Cam from your graveyard by paying {U}.
  3. When Sewer-veillance Cam enters, it triggers, untapping Emry.
  4. Activate Urza's first ability by tapping Sewer-veillance Cam, adding {U}.
  5. Activate Krark-Clan Ironworks by sacrificing Sewer-veillance Cam.
  6. Sewer-veillance Cam triggers, untapping a creature you control.
  7. Repeat.

Combo 3 with James, Wandering Dad // Follow Him

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite colorless mana · Infinite storm count · Infinite card draw · Infinite blue mana · Infinite draw triggers · Infinite magecraft triggers · Exile your library · Cast all spells in your library · Infinite commander casts · Infinite Clue tokens
Show steps
  1. Cast Follow Him either from your hand or from the command zone by paying {3}{U}{U} plus {1} for each time you've cast James / Follow Him from the command zone this game, plus commander tax, if applicable.
  2. Resolve Follow Him, creating at least three Clue tokens and returning Follow Him to the command zone from exile.
  3. Activate Urza's first ability by tapping a Clue, adding {U}.
  4. Activate Krark-Clan Ironworks by sacrificing the tapped Clue, adding {C}{C}.
  5. Repeat from step 2 until you control no Clues.
  6. Cast Follow Him from the command zone using all available mana, creating a number of Clue tokens and returning Follow Him to the command zone from exile.
  7. Repeat from step 3.

Combo 4 with The Cyber-Controller + Mycosynth Golem + Mycosynth Lattice

Results: Near-infinite mill
Show steps
  1. Activate Urza's first ability three times by tapping three artifacts you control, adding {3}.
  2. Cast The Cyber-Controller from the command zone, choosing for X to equal the amount of artifacts you control minus twice the number of times The Cyber-Controller has been cast from the command zone this game, but paying a total of {3} due to Mycosynth Lattice and Mycosynth Golem.
  3. When The Cyber-Controller enters the battlefield, it triggers, causing each opponent to mill X cards, and then putting all creature cards milled this way onto the battlefield face down under your control as 2/2 Cyberman artifact creatures.
  4. Activate Urza's first ability by tapping The Cyber-Controller, adding {1}.
  5. Activate Krark-Clan Ironworks by sacrificing The Cyber-Controller, adding {C}{C}.
  6. Choose to return The Cyber-Controller to the command zone from your graveyard.
  7. Repeat from step 2 as able, or until each opponent has milled their library.
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