How can you create a combo with Demonlord Belzenlok, Selective Memory, Laboratory Maniac?
user
[START OF COMBO]This combo can be formed with Demonlord Belzenlok, Selective Memory, Laboratory Maniac

Color identity: UB
Mana cost: {7}{U}{B}{B}
Steps:
  1. Cast Selective Memory by paying {3}{U}, exiling all nonland cards in your library.
  2. Cast Demonlord Belzenlok by paying {4}{B}{B}.
  3. When Demonlord Belzenlok enters the battlefield, it triggers, exiling the remainder of your library.
  4. The next time you would draw a card, you win the game due to Laboratory Maniac.[END OF COMBO STEPS]

Result:
  - Win the game
  - Exile your library[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Demonlord Belzenlok must be in your hand
  - Selective Memory must be in your hand
  - Laboratory Maniac must be on the battlefield
  - Optionally, you have a way to draw a card.
[END OF COMBO PREREQUISITES]
assistant