In rule Prophecies remove the string “—Fulfillment” and put the paragraph that follows it into a new sub-rule to rule Prophecies, titled “Fulfillment”.
In rule Prophecies, change “Once per Season, (but not on Sundays, not if the weather is Rain, and not if the Sky has not yet been examined in the current Season) each Townsperson may make a Prophecy.” to read:

Once per Season, (but not if the weather is Rain and not if the Sky has not yet been examined in the current Season) each Townsperson may spend two Fate to make a Prophecy.

In its sub-rule Fulfillment, add to the end of the first paragraph:

They shall then increase all Townspeople’s Fate values by one.

Set the Astrologer’s Fate to 10.