How can you create a combo with Experiment Kraj, Argothian Elder, Pili-Pala, Training Grounds?
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[START OF COMBO]This combo can be formed with Experiment Kraj, Argothian Elder, Pili-Pala, Training Grounds

Color identity: GU
Mana cost: 
Steps:
  1. Activate two lands you control by tapping them, adding at least {2}.
  2. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Pili-Pala.
  3. Activate Experiment Kraj using Pili-Pala's ability by paying {1} and untapping it, adding {1}.
  4. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Argothian Elder.
  5. Activate Experiment Kraj using Pili-Pala's ability by paying {1} and untapping it, adding {1}.
  6. Activate Experiment Kraj using Argothian Elder's ability by tapping it, untapping two lands.
  7. Activate two lands you control by tapping them, adding at least {2}.
  8. Repeat from step 5.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on creatures you control
  - Infinite mana lands you control can produce[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Experiment Kraj does not have summoning sickness.
  - You control at least two lands that can tap to produce at least {2}.
[END OF COMBO PREREQUISITES]
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