Dragon Breath is a basic Magic ability. When activated the player hits all targets within a frontal cone for up to 188% of active spell damage. Unlike Tsunami, this frontal cone only encompasses the three adjacent and diagonal spaces directly in front of the player. It does not hit opponents behind the target which the animation might suggest. The damage is not affected by a target's use of a dragonfire protection.
Cleave is the Strength equivalent of Dragon Breath. However, Cleave hits for 125% weapon damage instead.