This very bodged simulator simulates Fluctuator in pre-modern. The decklist is tweakable and the ideal decklist will perform on an average turn 4 kill.
To run the simulation, check out the repository or download the simulate.js file and run node simulate.js. The decklist on the bottom of the code is configurable to test different deck configurations.
Results after simulating 10000000 games
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Average Combo Turn: 3.8391801358361657
Bricked Game Percentage: 4.68665
Average Starting Hand Size 6.5151949
Turn 2: 801300 Turn 3: 4731388 Turn 4: 1814370 Turn 5: 1094256 Turn 6: 409012 Turn 7: 228163 Turn 8: 182142 Turn 9: 148401 Turn 10: 122303 Brick: 468665