December is to winter as September is to Fall (or Autumn).
A colon suggests that there will be a list that will follow it. Using the words 'such as', 'for example', and 'including' in a sentence also directs the attention of the reader to a list. It will be redundant to use a colon after the word 'including' in a sentence.
Answer:
ghost and curses
Explanation:
1 example: I think there was a floating dagger. Haven't read the book since 2016. Hope this helps.(: