How can you create a combo with Jirina Kudro, Mana Echoes, Pitiless Plunderer, Bloodflow Connoisseur?
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[START OF COMBO]This combo can be formed with Jirina Kudro, Mana Echoes, Pitiless Plunderer, Bloodflow Connoisseur

Color identity: RWB
Mana cost: {1}{R}{W}{B} plus enough mana to pay for commander tax, if applicable, or an additional {R}, {W} or {B} if you haven't cast Jirina from the command zone this game
Steps:
  1. Cast Jirina from the command zone by paying {1}{R}{W}{B} plus commander tax, if applicable.
  2. When Jirina enters the battlefield, it and Mana Echoes trigger.
  3. Resolve the Jirina trigger, creating a 1/1 Human Soldier creature token for each time you've cast Jirina from the command zone this game.
  4. When the Human Soldiers enter the battlefield, Mana Echoes triggers that many times.
  5. Resolve the first Mana Echoes trigger, adding {C} for each Human and Soldier you control.
  6. Repeat step 5 for each remaining Mana Echoes trigger created in steps 2 and 4.
  7. Activate Bloodflow Connoisseur twice by sacrificing Jirina and a Human Soldier.
  8. Choose to return Jirina to the command zone from your graveyard.
  9. When Jirina and the Human Soldier die, Pitiless Plunderer triggers twice, creating two Treasure tokens.
  10. Holding priority, if you control a Human Soldier, activate Bloodflow Connoisseur by sacrificing a Human Soldier.
  11. If you sacrificed a Human Soldier this way, Pitiless Plunderer triggers, creating a Treasure token.
  12. Resolve the Bloodflow Connoisseur abilities from steps 7 and 10, putting three +1/+1 counters on it.
  13. Activate up to three Treasures by tapping and sacrificing them, adding any combination of {R}, {W} and {B}.
  14. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite colored mana
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite colorless mana
  - Infinite storm count
  - Infinite creature tokens
  - Infinite Treasure tokens
  - Infinite commander casts
  - Infinite +1/+1 counters on Bloodflow Connoisseur[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Jirina Kudro must be in the command zone
  - Mana Echoes must be on the battlefield
  - Pitiless Plunderer must be on the battlefield
  - Bloodflow Connoisseur must be on the battlefield
[END OF COMBO PREREQUISITES]
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