How can you create a combo with Sidisi, Undead Vizier, Nexus of Fate, Chainer, Nightmare Adept?
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[START OF COMBO]This combo can be formed with Sidisi, Undead Vizier, Nexus of Fate, Chainer, Nightmare Adept

Color identity: UBR
Mana cost: {8}{U}{U}{B}{B} each turn
Steps:
  1. Activate Chainer by discarding a card, allowing you to cast a creature spell from your graveyard this turn.
  2. Cast Sidisi from your graveyard by paying {3}{B}{B}.
  3. When Sidisi enters the battlefield, its exploit ability and Chainer trigger.
  4. Resolve the Chainer trigger, giving Sidisi haste until end of turn.
  5. Resolve the Sidisi trigger, causing you to sacrifice Sidisi.
  6. Sidisi's second ability triggers, causing you to search your library for Nexus of Fate and put it into your hand.
  7. Cast Nexus of Fate by paying {5}{U}{U}, causing you to take an extra turn after this one and shuffle Nexus of Fate into your library.
  8. Repeat each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - Sidisi, Undead Vizier must be in the graveyard
  - Nexus of Fate must be in the library
  - Chainer, Nightmare Adept must be on the battlefield
  - You have not cast a creature spell using Chainer this turn.
  - You have at least one card in hand.
[END OF COMBO PREREQUISITES]
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