How can you create a combo with Osgir, the Reconstructor, Isochron Scepter, Pull from Eternity, Gonti's Aether Heart?
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[START OF COMBO]This combo can be formed with Osgir, the Reconstructor, Isochron Scepter, Pull from Eternity, Gonti's Aether Heart

Color identity: RW
Mana cost: {8} each turn
Steps:
  1. Activate Osgir's second ability by paying {6}, tapping it and exiling Gonti's Aether Heart from your graveyard, creating two token copies of Gonti's Aether Heart.
  2. Put one of the Gonti's Aether Hearts into your graveyard due to the legend rule.
  3. Both Gonti's Aether Hearts' enters-the-battlefield ability trigger twice, adding a total of eight {E}.
  4. Activate the remaining Gonti's Aether Heart by paying eight {E} and exiling it, causing you to take an extra turn after this one.
  5. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Pull from Eternity without paying its mana cost.
  6. Resolve Pull from Eternity, putting Gonti's Aether Heart into your graveyard from exile.
  7. Repeat each turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Osgir, the Reconstructor must be on the battlefield
  - Isochron Scepter must be on the battlefield
  - Pull from Eternity must be exiled
  - Gonti's Aether Heart must be in the graveyard
[END OF COMBO PREREQUISITES]
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