How can you create a combo with Ashaya, Soul of the Wild, Darksteel Garrison, Barrenton Medic?
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[START OF COMBO]This combo can be formed with Ashaya, Soul of the Wild, Darksteel Garrison, Barrenton Medic

Color identity: GW
Mana cost: 
Steps:
  1. Activate Barrenton Medic by tapping it, adding {G}.
  2. Darksteel Garrison triggers, giving Barrenton Medic +1/+1 until end of turn.
  3. Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite -1/-1 counters on Barrenton Medic
  - Infinite green mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Barrenton Medic does not have summoning sickness.
  - Darksteel Garrison attached to Barrenton Medic.
[END OF COMBO PREREQUISITES]
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