Darksteel Citadel + Urza, Prince of Kroog Combos

1 known combo featuring both cards in Commander

Infinite colorless mana Infinite copies of artifacts you control Infinite creature tokens Infinite ETB Infinite landfall triggers

Combo 1 with Metalworker + Retreat to Coralhelm

Results: Infinite colorless mana · Infinite copies of artifacts you control · Infinite creature tokens · Infinite ETB · Infinite landfall triggers · Infinite creature copies of artifacts you control
Steps
  1. Activate Metalworker by tapping it and revealing at least three artifact cards from your hand, adding at least six {C}.
  2. Activate Urza by paying {6}, creating a token copy of Darksteel Citadel that is a 1/1 Soldier.
  3. When the Darksteel Citadel token enters the battlefield, Retreat to Coralhelm triggers, untapping Metalworker.
  4. Repeat.
  5. If you have four or more artifact cards in hand, this combo nets infinite colorless mana, and you may target any artifact you control to get infinite copies of them.
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