How can you create a combo with Bristly Bill, Spine Sower, Devoted Druid?
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[START OF COMBO]This combo can be formed with Bristly Bill, Spine Sower, Devoted Druid

Color identity: G
Mana cost: {3}{G}{G}
Steps:
  1. Activate Bristly Bill by paying {3}{G}{G}, doubling the number of +1/+1 counters on each creature you control.
  2. Activate Devoted Druid's first ability by tapping it, adding {G}.
  3. Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
  4. Repeat from step 2 four additional times.
  5. Repeat from step 1.
  6. If Devoted Druid has six or more +1/+1 counters when you begin the combo, it will also get infinite +1/+1 counters which can be removed for infinite green mana.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - Devoted Druid has five or more +1/+1 counters on it.
  - Devoted Druid does not have summoning sickness
[END OF COMBO PREREQUISITES]
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