"These huge clusters of cannonballs, capable of downing a dragon in mid-flight, scatter and inflict terrible damage."
is the last and the most powerful shell unlocked from the Big Bertha.
The Dragon Shot is a shell loaded with buckshot. It damages all Buildings and enemy Troops randomly (but within a circle of 7 tiles in radius). The most damage is done to the area where the spell is dropped.
The Dragon Shot is very similar to Dynamite Stick but it has greater damage and has larger radius.
You can use it bot for destroying enemies groups of buildings and looting resources from banks and mints.