How can you create a combo with Saheeli, the Sun's Brilliance, There and Back Again, Pemmin's Aura?
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[START OF COMBO]This combo can be formed with Saheeli, the Sun's Brilliance, There and Back Again, Pemmin's Aura

Color identity: UR
Mana cost: {U}{R}
Steps:
  1. At the beginning of your precombat main phase, There and Back Again triggers, putting a lore counter on it.
  2. There and Back Again's third chapter ability triggers, creating a legendary 6/6 Smaug creature token and causing you to sacrifice There and Back Again.
  3. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of Smaug with haste.
  4. Put either Smaug token into your graveyard due to the legend rule.
  5. When the Smaug token dies, it triggers, creating fourteen Treasure tokens.
  6. Activate three Treasures by tapping and sacrificing them, adding {U}{U}{R}.
  7. Activate Pemmin's Aura's first ability by paying {U}, untapping Saheeli.
  8. Repeat from step 3.
  9. Once you have infinite mana, you may target any other creature(s) or artifact(s) you control.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite copies of artifacts you control
  - Infinite copies of creatures you control
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite Treasure tokens
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Saheeli does not have summoning sickness.
  - There and Back Again has exactly two lore counters on it.
[END OF COMBO PREREQUISITES]
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