Using this exploit -
http://www.mmowned.com/forums/wow-ex...h-exploit.html
You could stack the pyroball candies throughout the entire Hallow's End event, and save them all for one massive buff. They stack with each other providing 6 spell damage per. Assuming there are at least 15 Inns with candies, you could easily have over 100 candies stacked and ready for one massive buff when the time comes.