Roll 2D6 to determine the strength of the Winds of Magic.
At the start of each Magic phase, the casting player determines the strength of the Winds of Magic by rolling 2D6. This number is increased for each 2000 points you increase the game size with after 2000 points, so at 4000 points you roll 4D6, at 6000 points you roll 6D6 and so on.