Protean Hulk + Carrion Feeder + Phyrexian Delver + Body Snatcher + Blood Artist + Saffi Eriksdotter + Renegade Rallier

Protean Hulk
Carrion Feeder
Phyrexian Delver
Body Snatcher
Blood Artist
Saffi Eriksdotter
Renegade Rallier

Requires
Protean Hulk must be on the battlefield. Carrion Feeder must be in the library. Phyrexian Delver must be in the library. Body Snatcher must be in the library. Blood Artist must be in the library. Saffi Eriksdotter must be in the library. Renegade Rallier must be in the library. You have a way to cause Protean Hulk to die.
Steps
  1. Get Protean Hulk killed, triggering its ability.
  2. Get Phyrexian Delver and Carrion Feeder.
  3. Phyrexian Delver ETB triggers, bring back Protean Hulk to play.
  4. Sacrifice Protean Hulk to Carrion Feeder, triggering it's ability.
  5. Get Body Snatcher and Blood Artist.
  6. Body Snatcher ETB triggers, hold priority and sacrifice it to Carrion Feeder, triggering its death trigger.
  7. Bring back Protean Hulk to play, Body Snatcher ETB resolves.
  8. Sacrifice Protean Hulk to Carrion Feeder, triggering it's ability.
  9. Get Renegade Rallier and Saffi Eriksdotter.
  10. Use Saffi's ability, sacrificing itself, targeting Renegade Rallier.
  11. Sacrifice Renegade Rallier to Carrion Feeder, triggering Blood Artist to ping an opponent.
  12. Renegade Rallier returns to the battlefield from Saffi's delayed trigger.
  13. Using Renegade Rallier's ETB ability, target Saffi and return Saffi to play.
  14. Repeat.
Results
Infinite death triggers. Infinite ETB. Infinite lifegain. Infinite lifegain triggers. Infinite lifeloss. Infinite LTB.

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