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Color Identity: Blue, Black, Red

Prerequisites

  1. Professor Onyx on the battlefield
  2. Fork and Expansion // Explosion in hand
  3. An additional instant or sorcery in hand with the mana available to cast it, or an opponent has cast an as of yet unresolved instant or sorcery spell
  4. (ur magic symbol)   (ur magic symbol)   (r magic symbol)   (r magic symbol)   available

Steps

  1. Cast your additional instant or sorcery spell, or wait for an opponent to cast one
  2. Professor Onyx triggers, losing each opponent two life and gaining you two life
  3. Cast Fork targeting the instant or sorcery spell
  4. Professor Onyx triggers, losing each opponent two life and gaining you two life
  5. Cast Expansion targeting Fork
  6. Professor Onyx triggers, losing each opponent two life and gaining you two life
  7. Resolve Expansion, copying Fork and choosing Fork as the target
  8. Professor Onyx triggers, losing each opponent two life and gaining you two life
  9. Resolve the copied Fork, copying Fork and choosing Fork as the target
  10. Repeat from step 8

Results

  1. Infinite lifegain
  2. Infinite life loss