This is the Dragon City weakness chart for both attacking and defending elements.
Dragon City Weakness List
The chart tells you which element is weak against which when defending. The first element of the dragon will tell you it’s weakness. For example, the Sea/Nature dragon Nenufar has Sea as it’s first element. Therefore, it will take double damage when hit by flame attacks and half damage from sea and nature attacks. It also takes no damage from terra attacks. This little chart is taken from the wonderful wikia.
Defending Element
Dragon City Dragon Attacking Guide
When attacking, you will want to see the basic elements and what it is effective against. Below is a quick chart to tell you the strengths and weaknesses of each element.
For example, a Flame hybrid dragon such as Cool Fire that has normal, flame and ice attacks would be very effective against sea, nature and ice type dragons.
Additional Info
Can dragons have many elements?
Dragons can have up to four elements. The primary element, which is the first listed, represents the dragon’s flaws. Each element represents a different kind of move that the dragon can learn. Having four elements is advantageous because the dragon can learn four distinct types of moves.
What exactly are primary elements?
A dragon’s primary elements are the first elements listed. They determine which moves the dragon is vulnerable to. The other elements for a dragon show the different types of moves it can learn.
Why can’t I combine some elements?
Some elements should not be combined. These are known as opposing elements. Fire and Ice, for example, are diametrically opposed elements that cannot be bred together.
What exactly is a “Opposite Element”?
Because some elements have opposing elements, single-element dragons of these types cannot be bred together. However, multi-element dragons can be used to experiment with breeding combinations of these elements.
What are Element Tokens?
In some dragon city events or when opening your daily calendar, you may get some Element Tokens. These tokens are used to upgrade your habitats beyond level 2.