How can you create a combo with Ruthless Knave, Gravecrawler, Pitiless Plunderer, Pawn of Ulamog?
user
[START OF COMBO]This combo can be formed with Ruthless Knave, Gravecrawler, Pitiless Plunderer, Pawn of Ulamog

Color identity: B
Mana cost: {2}{B}
Steps:
  1. Activate Ruthless Knave's first ability by paying {2}{B} and sacrificing Gravecrawler.
  2. Gravecrawler dies, triggering Pitiless Plunderer and Pawn of Ulamog.
  3. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  4. Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn creature token.
  5. Resolve the Ruthless Knave ability from step 1, creating two Treasure tokens.
  6. Activate the Eldrazi Spawn by sacrificing it, adding {C}.
  7. The Eldrazi Spawn dies, triggering Pitiless Plunderer, creating a Treasure token.
  8. Activate three Treasure tokens by tapping and sacrificing them, adding {1}{B}{B}.
  9. Cast Gravecrawler from your graveyard by paying {B}.
  10. Repeat.
  11. Once you have infinite Treasure tokens, you may activate Ruthless Knave's last ability any number of times.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite creature tokens with 0 power
  - Infinite death triggers
  - Infinite draw triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control another Zombie.
[END OF COMBO PREREQUISITES]
assistant