Screaming Nemesis

• WWizards of the Coast2024-09-20
  Official Ruling
  If an effect says to set a player's life total to a number that's higher than their current life total while they're affected by Screaming Nemesis's last ability, their life total won't change.
• WWizards of the Coast2024-09-20
  Official Ruling
  Spells and abilities that cause a player affected by Screaming Nemesis's last ability to gain life still resolve. That player won't gain life, but any other effects of that spell or ability will happen.
• WWizards of the Coast2024-09-20
  Official Ruling
  Once Screaming Nemesis's last ability causes it to deal damage to a player, that player won't be able to gain life for the rest of the game. It doesn't matter if Screaming Nemesis remains on the battlefield or not.
• WWizards of the Coast2024-09-20
  Official Ruling
  If lethal damage is dealt to Screaming Nemesis, its last ability still triggers.
• WWizards of the Coast2024-09-20
  Official Ruling
  If Screaming Nemesis is dealt damage by multiple sources at once, such as by two creatures blocking it, its last ability triggers once and one target is dealt that much damage.

Rulings via Scryfall

• WO
  Wizards of the Coast2025-11-10

  Screaming Nemesis was banned in standard on November 10, 2025. Screaming Nemesis is among the strongest cards in the default Mono-Red Aggro deck, and one of the most frustrating cards to play against in the deck. It singlehandedly removes most counterplay against Mono-Red by giving the Mono-Red deck a great game plan against two of Mono-Red's natural predators: life gain and large blockers. With Screaming Nemesis out of the equation, we believe it is far more likely that the metagame will be able to find a healthy equilibrium with Mono-Red as just part of the landscape, not the deck to beat. Source: https://magic.wizards.com/en/news/announcements/banned-and-restricted-november-10-2025