How can you create a combo with Urza, Prince of Kroog, Training Grounds, Liquimetal Torque, Earthcraft?
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[START OF COMBO]This combo can be formed with Urza, Prince of Kroog, Training Grounds, Liquimetal Torque, Earthcraft

Color identity: GWU
Mana cost: {4}
Steps:
  1. Activate Liquimetal Torque's second ability by tapping it, causing Training Grounds to become an artifact until end of turn.
  2. Activate the basic land by tapping it, adding {1}.
  3. Activate Urza by paying {4}, creating a token copy of Training Grounds that is a 1/1 Soldier in addition to its other types.
  4. Activate Earthcraft by tapping the Training Grounds token, untapping a basic land.
  5. Activate the basic land by tapping it, adding {1}.
  6. Activate Urza by paying {2}, creating a token copy of Training Grounds that is a 1/1 Soldier in addition to its other types.
  7. Activate Earthcraft by tapping the Training Grounds token, untapping a basic land.
  8. Activate the basic land by tapping it, adding {1}.
  9. Activate Urza by paying {1}, creating a token copy of Training Grounds that is a 1/1 Soldier in addition to its other types.
  10. Repeat from step 7.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite tapped creature tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one basic land.
[END OF COMBO PREREQUISITES]
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