Gemstone Array + Krark-Clan Ironworks Combos

3 known combos featuring both cards in Commander

Infinite death triggers Infinite LTB Infinite sacrifice triggers Infinite ETB Infinite colored mana

Combo 1 with Zirda, the Dawnwaker + Auriok Salvagers + Retrofitter Foundry

Results: Infinite colored mana · Infinite colorless mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Infinite storm count · Infinite charge counters on a permanent
Steps
  1. Pay {1} and tap Retrofitter Foundry to create a 1/1 Servo token.
  2. Sacrifice Retrofitter Foundry to Krark-Clan Ironworks to add {C}{C}.
  3. Sacrifice a Servo to Krark-Clan Ironworks to add {C}{C}.
  4. Pay {1} to put a charge counter on Gemstone Array.
  5. Remove the charge counter from Gemstone Array to add {W}.
  6. Pay {W} to Auriok Salvagers to return Retrofitter Foundry from your graveyard to your hand.
  7. Cast Retrofitter Foundry for {1}.
  8. Repeat.

Combo 2 with Puppet Conjurer + Dross Scorpion

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers
Show steps
  1. Activate Puppet's Conjurer by paying {U} and tapping it, creating a 0/1 Homunculus artifact creature token.
  2. Activate Krark-Clan Ironworks by sacrificing the Homunculus, adding {C}{C}.
  3. When the Homunculus dies, Dross Scorpion triggers, untapping Puppet's Conjurer.
  4. Activate Gemstone Array by paying {2}, putting a charge counter on it.
  5. Activate Gemstone Array by removing a charge counter from it, adding {U}.
  6. Repeat.

Combo 3 with Sydri, Galvanic Genius + Salvaging Station

Results: Infinite LTB · Infinite sacrifice triggers · Infinite death triggers
Show steps
  1. Activate Salvaging Station by tapping it, returning the mana value 1 artifact from your graveyard to the battlefield.
  2. Activate Sydri's first ability by paying {U}, causing the artifact to become an artifact creature until end of turn.
  3. Activate Krark-Clan Ironworks by sacrificing the artifact, adding {C}{C}.
  4. When the artifact dies, Salvaging Station triggers, untapping Salvaging Station.
  5. Activate Gemstone Array by paying {2}, putting a charge counter on it.
  6. Activate Gemstone Array by removing a charge counter from it, adding {U}.
  7. Repeat.
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