A better combination.

The fire salamander wyvern had a body length of 25ft and a wingspan of 30ft. Its entire body except for its wings was covered by yellow and black scales, and although its scales couldn't be damaged by spells and weapons below the epic tier and peak demigod realm respectively, they were poisonous to the touch.

The tier 1 emperor beast possessed a 5-inch long pair of underside horns, vertical pupil surrounded by thick yellow sclera that could make a nascent demigod's bone shiver. Its nostrils were like chimneys that spilled out thick black poisonous gas with each exhalation.

It was a master of fire and air elements and had the innate ability to continuously generate poison in the form of both gas and liquid.

It was so poisonous that even its aura was also poisonous, eliminating it as ever being a possible pet (ie if it could be made one). It had stopped midair to prevent killing all the trees and beasts nearby.