Doubling Cube + Urza, Prince of Kroog Combos

5 known combos featuring both cards in Commander

Infinite copies of artifacts you control Infinite ETB Infinite mana permanents you control can produce Infinite creature copies of artifacts you control Infinite creature tokens

Combo 1 with Swiftfoot Boots

Also requires: Swiftfoot Boots Swiftfoot Boots
Results: Infinite copies of artifacts you control · Infinite creature tokens · Infinite ETB · Infinite mana permanents you control can produce · Infinite creature copies of artifacts you control
Steps
  1. Float at least {11}.
  2. Activate Doubling Cube by paying {3} and tapping it, adding at least {8}.
  3. Activate Urza by paying {6}, creating a token copy of Doubling Cube that is a 1/1 Soldier.
  4. Activate Swiftfoot Boots' equip ability by paying {1}, attaching it to the Doubling Cube token.
  5. Repeat from step 2 using the Doubling Cube token instead.
  6. Once you have infinite mana, you may target any artifact you control to get infinite copies of them.

Combo 2 with Lightning Greaves

Also requires: Lightning Greaves Lightning Greaves
Results: Infinite copies of artifacts you control · Infinite creature tokens · Infinite ETB · Infinite mana permanents you control can produce · Infinite creature copies of artifacts you control
Show steps
  1. Float at least {10}.
  2. Activate Doubling Cube by paying {3} and tapping it, adding at least {7}.
  3. Activate Urza by paying {6}, creating a token copy of Doubling Cube that is a 1/1 Soldier.
  4. Activate Lightning Greaves' equip ability by paying {0}, attaching it to the Doubling Cube token.
  5. Repeat from step 2 using the Doubling Cube token instead.
  6. Once you have infinite mana, you may target any artifact you control to get infinite copies of them.

Combo 3 with Akroma's Memorial

Also requires: Akroma's Memorial Akroma's Memorial
Results: Infinite copies of artifacts you control · Infinite ETB · Infinite mana permanents you control can produce · Infinite creature copies of artifacts you control · Infinite creature tokens with haste
Show steps
  1. Float at least {10}.
  2. Activate Doubling Cube by paying {3} and tapping it, adding at least {7}.
  3. Activate Urza by paying {6}, creating a token copy of Doubling Cube that is a 1/1 Soldier.
  4. Repeat from step 2 using the Doubling Cube token instead.
  5. Once you have infinite mana, you may target any artifact you control to get infinite copies of them.

Combo 4 with Thousand-Year Elixir

Also requires: Thousand-Year Elixir Thousand-Year Elixir
Results: Infinite copies of artifacts you control · Infinite ETB · Infinite mana permanents you control can produce · Infinite creature copies of artifacts you control · Infinite creature tokens
Show steps
  1. Float at least {10}.
  2. Activate Doubling Cube by paying {3} and tapping it, adding at least {7}.
  3. Activate Urza by paying {6}, creating a token copy of Doubling Cube that is a 1/1 Soldier.
  4. Repeat from step 2 using the Doubling Cube token instead.
  5. Once you have infinite mana, you may target any artifact you control to get infinite copies of them.

Combo 5 with Ring of Valkas

Also requires: Ring of Valkas Ring of Valkas
Results: Infinite copies of artifacts you control · Infinite creature tokens · Infinite ETB · Infinite mana permanents you control can produce · Infinite creature copies of artifacts you control
Show steps
  1. Float at least {11}.
  2. Activate Doubling Cube by paying {3} and tapping it, adding at least {8}.
  3. Activate Urza by paying {6}, creating a token copy of Doubling Cube that is a 1/1 Soldier.
  4. Activate Ring of Valkas' equip ability by paying {1}, attaching it to the Doubling Cube token.
  5. Repeat from step 2 using the Doubling Cube token instead.
  6. Once you have infinite mana, you may target any artifact you control to get infinite copies of them.
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