How can you create a combo with Colfenor, the Last Yew, Saffi Eriksdotter, Pitiless Plunderer, Ashnod's Altar?
user
[START OF COMBO]This combo can be formed with Colfenor, the Last Yew, Saffi Eriksdotter, Pitiless Plunderer, Ashnod's Altar

Color identity: WBG
Mana cost: 
Steps:
  1. Activate Saffi Eriksdotter by sacrificing it targeting Colfenor.
  2. Colfenor and Pitiless Plunderer trigger.
  3. Let the Colfenor trigger resolve, declining to return anything.
  4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  5. Resolve the Saffi Eriksdotter ability, creating a delayed trigger that will return Colfenor to the battlefield when it dies.
  6. Activate Ashnod's Altar by sacrificing Colfenor, adding {C}{C}.
  7. Colfenor, Pitiless Plunderer, and Saffi Eriksdotter trigger.
  8. Resolve the Colfenor trigger, returning Saffi Eriksdotter to your hand.
  9. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  10. Resolve the Saffi Eriksdotter trigger, returning Colfenor to the battlefield.
  11. Cast Saffi Eriksdotter by sacrificing the two Treasure tokens.
  12. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant