How can you create a combo with Flame Jab, Polyraptor, Mana Echoes, Groundskeeper, Chromatic Orrery?
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[START OF COMBO]This combo can be formed with Flame Jab, Polyraptor, Mana Echoes, Groundskeeper, Chromatic Orrery

Color identity: RG
Mana cost: {2}
Steps:
  1. If Flame Jab is in your graveyard, cast it for its retrace cost by paying {1} and discarding a basic land card, targeting Polyraptor.
  2. Otherwise, cast it by paying {1}, targeting Polyraptor.
  3. Resolve Flame Jab, dealing 1 damage to Polyraptor.
  4. Polyraptor triggers, creating a token copy of itself.
  5. The Polyraptor token enters the battlefield, triggering Mana Echoes, adding {C} for each Dinosaur you control.
  6. If you cast Flame Jab from your graveyard, activate Groundskeeper by paying {2}, returning a basic land card from your graveyard to your hand.
  7. Repeat.
  8. Once you have infinite mana, you may instead target any other target using Flame Jab.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite damage
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Flame Jab must be in your hand or in the graveyard
  - Polyraptor must be on the battlefield
  - Mana Echoes must be on the battlefield
  - Groundskeeper must be on the battlefield
  - Chromatic Orrery must be on the battlefield
  - You have a basic land card in hand.
[END OF COMBO PREREQUISITES]
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