How can you create a combo with The Jolly Balloon Man, Mana Echoes, Umbral Mantle?
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[START OF COMBO]This combo can be formed with The Jolly Balloon Man, Mana Echoes, Umbral Mantle

Color identity: RW
Mana cost: {1}
Steps:
  1. Activate The Jolly Balloon Man by paying {1} and tapping it, creating a token copy of a nonlegendary creature you control that is a 1/1 Balloon with flying and haste.
  2. When the creature token enters the battlefield, Mana Echoes triggers, adding {C} for creature you control that shares a creature type with the creature token.
  3. Activate The Jolly Balloon Man by paying {3} and untapping it, giving it +2/+2 until end of turn.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite colorless mana
  - Infinite creature tokens with haste
  - Infinite token copies of each other creature you control with haste
  - Infinitely large The Jolly Balloon Man until end of turn[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control at least one additional nonlegendary creature.
[END OF COMBO PREREQUISITES]
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