How can you create a combo with Kinnan, Bonder Prodigy, Incubation Druid, Umbral Mantle?
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[START OF COMBO]This combo can be formed with Kinnan, Bonder Prodigy, Incubation Druid, Umbral Mantle

Color identity: GU
Mana cost: 
Steps:
  1. Activate Incubation Druid's first ability by tapping it, adding three mana of any color a land you control could produce.
  2. Kinnan triggers, adding one mana of the color produced by Incubation Druid.
  3. Activate Incubation Druid by paying {3} and untapping it, giving itself +2/+2 until end of turn.
  4. Repeat.
  5. If you gain infinite {U} and {G} this way, you may activate Kinnan's ability an arbitraily large number of times.[END OF COMBO STEPS]

Result:
  - Infinitely large Incubation Druid until end of turn
  - Put all non-Human creatures from your library onto the battlefield
  - Infinite mana lands you control can produce[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Umbral Mantle attached to Incubation Druid.
  - Incubation Druid does not have summoning sickness.
  - Incubation Druid has at least one +1/+1 counter on it.
[END OF COMBO PREREQUISITES]
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