How can you create a combo with The Tenth Doctor, Rousing Refrain?
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[START OF COMBO]This combo can be formed with The Tenth Doctor, Rousing Refrain

Color identity: UR
Mana cost: {3}{R}{R} if Rousing Refrain is in your hand, or {7} available otherwise
Steps:
  1. If Rousing Refrain is in your hand, cast it by paying {3}{R}{R}.
  2. Otherwise, activate The Tenth Doctor by paying {7}, causing you to time travel three times, removing all time counters from Rousing Refrain and cast Rousing Refrain from exile without paying its mana cost.
  3. Resolve Rousing Refrain, adding at least seven {R}, and exiling Rousing Refrain with three time counters on it.
  4. Repeat from step 2.
  5. If an opponent has eight or more cards in hand, this combo nets infinite red mana.[END OF COMBO STEPS]

Result:
  - Infinite magecraft triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - The Tenth Doctor must be on the battlefield
  - Rousing Refrain must be in your hand or exiled
  - Rousing Refrain in hand or in exile with at least one time counter on it.An opponent has at least seven cards in hand.
[END OF COMBO PREREQUISITES]
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