How can you create a combo with Urza, Prince of Kroog, Metalworker, Swiftfoot Boots?
user
[START OF COMBO]This combo can be formed with Urza, Prince of Kroog, Metalworker, Swiftfoot Boots

Color identity: WU
Mana cost: {1} if Metalworker has summoning sickness
Steps:
  1. If needed, activate Swiftfoot Boots' equip ability by paying {1}, attaching it to Metalworker.
  2. Activate Metalworker by tapping it and revealing at least four artifact cards from your hand, adding at least eight {C}.
  3. Activate Urza by paying {6}, creating a token copy of Metalworker that is a 1/1 Soldier.
  4. Activate Swiftfoot Boots' equip ability by paying {1}, attaching it to the Metalworker token.
  5. Repeat from step 2 using the Metalworker token instead.
  6. Once you have infinite colorless mana, you may target any artifact you control to get infinite copies of them.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite copies of each artifact you control
  - Infinite creature tokens
  - Infinite enters the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You have at least three artifact cards in hand.
[END OF COMBO PREREQUISITES]
assistant