How can you create a combo with Razaketh, the Foulblooded, Beacon of Tomorrows, Ophiomancer, Palace Siege?
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[START OF COMBO]This combo can be formed with Razaketh, the Foulblooded, Beacon of Tomorrows, Ophiomancer, Palace Siege

Color identity: UB
Mana cost: {6}{U}{U} each turn
Steps:
  1. At the beginning of your upkeep, Palace Siege and Ophiomancer trigger.
  2. Resolve the Palace Siege trigger, causing each opponent to lose 2 life and you to gain two life.
  3. Resolve the Ophiomancer trigger, creating a 1/1 Snake creature token.
  4. Activate Razaketh by paying 2 life and sacrificing the Snake token, searching your library for Beacon of Tomorrows and putting it into your hand.
  5. Cast Beacon of Tomorrows by paying {6}{U}{U}, causing you to take an extra turn after this one and shuflle Beacon of Tomorrows into your library.
  6. Repeat each turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Razaketh, the Foulblooded must be on the battlefield
  - Beacon of Tomorrows must be in your hand
  - Ophiomancer must be on the battlefield
  - Palace Siege must be on the battlefield
  - "Dragons" chosen with Palace Siege.
  - You control no Snakes.
[END OF COMBO PREREQUISITES]
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