How can you create a combo with Ratadrabik of Urborg, Nazgûl, Viscera Seer?
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[START OF COMBO]This combo can be formed with Ratadrabik of Urborg, Nazgûl, Viscera Seer

Color identity: WB
Mana cost: {2}{B}
Steps:
  1. Cast Nazgûl by paying {2}{B}.
  2. Nazgûl enters, triggering its first activated ability, causing the Ring to tempt you; choose Nazgûl as your Ring-bearer, making it legendary.
  3. Nazgûl's second activated ability triggers, putting a +1/+1 counter on each Wraith you control.
  4. Activate Viscera Seer by sacrificing Nazgûl.
  5. Ratadrabik of Urborg triggers, creating a token copy of Nazgûl that's a 2/2 Zombie.
  6. Resolve the ability from step 4, scrying 1.
  7. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite scry 1
  - Infinite creature tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Ratadrabik of Urborg must be on the battlefield
  - Nazgûl must be in your hand
  - Viscera Seer must be on the battlefield
[END OF COMBO PREREQUISITES]
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