How can you create a combo with Flash, Protean Hulk, Vigean Graftmage, Incubation Druid, Torch Courier?
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[START OF COMBO]This combo can be formed with Flash, Protean Hulk, Vigean Graftmage, Incubation Druid, Torch Courier

Color identity: GUR
Mana cost: {1}{U}
Steps:
  1. Cast Flash putting Protean Hulk into play and choose not to pay.
  2. Protean Hulk is sacrificed.
  3. Grab Vigean Graftmage, Incubation Druid, & Torch Courier.
  4. Vigean Graftmage's Graft ability triggers, move a counter to Incubation Druid.
  5. Sacrifice Torch Courier to give Incubation Druid haste.
  6. Tap Incubation Druid for {U}{U}{U} and untap it with Vigean Graftmage, netting {U}.
  7. Repeat for infinite {U}.
  8. You can now untap Incubation Druid as much as you want to get infinite of your other colors.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite tap triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Flash must be in your hand
  - Protean Hulk must be in your hand
  - Vigean Graftmage must be in the library
  - Incubation Druid must be in the library
  - Torch Courier must be in the library
[END OF COMBO PREREQUISITES]
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