How can you create a combo with Worldheart Phoenix, Faeburrow Elder, Thornbite Staff, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Worldheart Phoenix, Faeburrow Elder, Thornbite Staff, Phyrexian Altar

Color identity: WUBRG
Mana cost: 
Steps:
  1. Activate Faeburrow Elder by tapping it, adding {W}{U}{B}{R}{G}.
  2. Activate Phyrexian Altar by sacrificing Worldheart Phoenix, adding one mana of any color.
  3. Worldheart Phoenix dies, triggering Faeburrow Elder, untapping Faeburrow Elder.
  4. Cast Worldheart Phoenix from your graveyard by paying {W}{U}{B}{R}{G}.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored 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
  - You control a blue and a black permanent.
  - Thornbite Staff attached to Faeburrow Elder.
  - Faeburrow Elder does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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