How can you create a combo with Satoru Umezawa, Peregrine Drake, Silver-Fur Master?
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[START OF COMBO]This combo can be formed with Satoru Umezawa, Peregrine Drake, Silver-Fur Master

Color identity: UB
Mana cost: 
Steps:
  1. Declare Silver-Fur Master as an attacker.
  2. When it isn't blocked, activate up to five lands you control by tapping them, adding at least {1}{U}{U}{B}{B}.
  3. Activate Peregrine Drake's ninjutsu ability by paying {1}{U}{B} and returning Silver-Fur Master from the battlefield to your hand, putting Peregrine Drake onto the battlefield from your hand tapped and attacking.
  4. When Peregrine Drake enters the battlefield, it triggers, untapping up to five lands.
  5. Activate Silver-Fur Master's ninjutsu ability by paying {U}{B} and returning Peregrine Drake from the battlefield to your hand, putting Silver-Fur Master onto the battlefield from your hand tapped and attacking.
  6. Repeat from step 2.
  7. If you control up to five lands that can tap to produce at least {2}{U}{U}{U}{B}, this combo nets infinite mana.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Satoru Umezawa must be on the battlefield
  - Peregrine Drake must be in your hand
  - Silver-Fur Master must be on the battlefield
  - Silver-Fur Master does not have summoning sickness and cannot be blocked by an opponent.
  - You control up to five lands that can tap to produce at least {1}{U}{U}{B}{B}.
[END OF COMBO PREREQUISITES]
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