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Color Identity: Blue, Black, Red

Prerequisites

  1. Professor Onyx on the battlefield
  2. Twincast in hand
  3. Increasing Vengeance in hand or graveyard
  4. 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
  5. If Increasing Vengeance is in hand, (u magic symbol)   (u magic symbol)   (r magic symbol)   (r magic symbol)   available
  6. If Increasing Vengeance is in graveyard, (3 magic symbol)   (u magic symbol)   (u 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 Twincast targeting the instant or sorcery spell
  4. Professor Onyx triggers, losing each opponent two life and gaining you two life
  5. Cast Increasing Vengeance targeting Twincast
  6. Professor Onyx triggers, losing each opponent two life and gaining you two life
  7. Resolve Increasing Vengeance, copying Twincast twice and choosing Twincast as the target each time
  8. Professor Onyx triggers, losing each opponent two life and gaining you two life
  9. Resolve a copied Twincast, copying Twincast and choosing Twincast as the target
  10. Repeat from step 8

Results

  1. Infinite lifegain
  2. Infinite life loss