How can you create a combo with Dockside Extortionist, Sakashima's Student, Yuriko, the Tiger's Shadow?
user
[START OF COMBO]This combo can be formed with Dockside Extortionist, Sakashima's Student, Yuriko, the Tiger's Shadow

Color identity: UBR
Mana cost: {1}{U}
Steps:
  1. Declare Yuriko as an attacker, attacking an opponent unable to block it.
  2. Activate Sakashima's Student's ninjutsu ability by paying {1}{U} and returning Yuriko to your hand, putting Sakashima's Student from your hand onto the battlefield as a copy of Dockside Extortionist.
  3. Sakashima's Student enters the battlefield, creating at least five Treasure tokens.
  4. Activate at least four Treasure tokens by tapping and sacrificing them, adding at least {2}{U}{B}.
  5. Activate Yuriko's ninjutsu ability by paying {U}{B} and returning Sakashim'a Student to your hand, putting Yuriko from your hand onto the battlefield.
  6. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Dockside Extortionist must be on the battlefield
  - Sakashima's Student must be in your hand
  - Yuriko, the Tiger's Shadow must be on the battlefield
  - Your opponents control at least five artifacts and/or enchantments.
  - An opponent is unable to block Yuriko.
  - Yuriko does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant