While fighting The Broken Dragon, an icon can appear under your heroes health bar when standing in a fire pit. The detail for the icon is:
#Fireball Buff/Debuff Icon is Deceptive
faint turret
Being titled "fireball" leads players to assume the effect is from the spitballs from The Broken Dragon but is clearly from the fire pits.
Further, unless the "Damage taken increased by 10.0%" is for the damage you cause to your enemy, I do not see how any of this is a Positive Effect.
Seems that the icon effect description needs to be corrected.
The icon did not appear until I stood on the fire pit while The Broken Dragon was using the main fire breath attack.
slender turtle
ET-1427
faint turret
Confirmed that the icon does not show for any other The Broken Dragon attacks even though the spitballs also caused damage over time.