How can you create a combo with Runo Stromkirk // Krothuss, Lord of the Deep, Rune-Scarred Demon, Beacon of Tomorrows?
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[START OF COMBO]This combo can be formed with Runo Stromkirk // Krothuss, Lord of the Deep, Rune-Scarred Demon, Beacon of Tomorrows

Color identity: UB
Mana cost: {6}{U}{U} each turn
Steps:
  1. Declare Krothuss and Rune-Scarred Demon as attackers.
  2. Krothuss triggers, creating a token copy of Rune-Scarred Demon that is tapped and attacking.
  3. The Rune-Scarred Demon token enters the battlefield, causing you to search your library for Beacon of Tomorrows and put it into your hand.
  4. Cast Beacon of Tomorrows by paying {6}{U}{U}, causing you to take an extra turn after this one and shuffle Beacon of Tomorrows into your library.
  5. Repeat each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - Runo Stromkirk // Krothuss, Lord of the Deep must be on the battlefield
  - Rune-Scarred Demon must be on the battlefield
  - Beacon of Tomorrows must be in the library
  - Runo on the battlefield as Krothuss, Lord of the Deep.
  - Rune-Scarred Demon and Krothuss do not have summoning sickness.
  - An opponent is unable to block and kill Krothuss and Rune-Scarred Demon.
[END OF COMBO PREREQUISITES]
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