Dockside Extortionist enters the battlefield, it triggers, creating at least nine Treasure artifact tokens.
Activate nine Treasures by tapping and sacrificing them, adding ({6} magic symbol) ({U} magic symbol) ({U} magic symbol) ({R} magic symbol) .
If
Reality Strobe is in your hand, cast it by paying ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Otherwise, activate
The Tenth Doctor by paying ({7} magic symbol) , causing you to time travel three times, removing all time counters from
Reality Strobe and cast
Reality Strobe from exile without paying its mana cost.
Resolve
Reality Strobe, returning
Dockside Extortionist to your hand from the battlefield, and exiling
Reality Strobe with three time counters on it.
Repeat.
If opponents control ten or more artifacts and/or enchantments, this combo nets infinite Treasure tokens and mana, and you may bounce other permanents using
Reality Strobe.
Results
Infinite colored mana.
Infinite ETB.
Infinite LTB.
Infinite magecraft triggers.
Infinite storm count.
Infinite Treasure tokens.
Return any number of permanents to their owner's hand.