How can you create a combo with Selvala, Eager Trailblazer, Umbral Mantle?
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[START OF COMBO]This combo can be formed with Selvala, Eager Trailblazer, Umbral Mantle

Color identity: GW
Mana cost: 
Steps:
  1. Activate Selvala by tapping it, adding at least four rmana of any color.
  2. Activate Selvala by paying {3} and untapping it, giving it +2/+2 until end of turn.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinitely large Selvala until end of turn[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least four creatures with different powers.
  - Umbral Mantle attached to Selvala.
  - Selvala does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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