Zedruu the Greathearted + Ghyrson Starn, Kelermorph + Sakashima of a Thousand Faces + Gisela, Blade of Goldnight

Zedruu the Greathearted
Ghyrson Starn, Kelermorph
Sakashima of a Thousand Faces
Gisela, Blade of Goldnight

Requires
All permanents on the battlefield. Sakashima of a Thousand Faces on the battlefield as a copy of Ghyrson Starn. You have a way to deal exactly 1 damage to an opponent. rwu available.
Steps
  1. Deal exactly one damage to an opponent, triggering Ghyrson Starn and Sakashima
  2. Holding priority, activate Zedruu by paying rwu, giving control of Gisela to the opponent
  3. Resolve the Ghyrson Starn trigger, dealing 1 damage to the opponent
  4. Sakshima triggers, dealing 1 damage to the opponent
  5. Ghyrson Starn triggers, dealing 1 damage to the opponent
  6. Repeat from step 4
  7. If you have multiple methods of dealing 1 damage to an opponent, you may repeat this process for each opponent once you regain control of Gisela after the opponent loses the game
Results
Target opponent loses the game. Infinite damage to target opponent.