FeO's breath weapon is a 40 foot line, and FeO has average maneuverabililty with a flying speed of 100 ft. I do not think FeO can mess this up (although PJSlavner might be able to mess it up for him).
FeO breathes. E-L takes 2, having 42 HP left. FeO has to wait four rounds to breathe. FeO will make sure he is in the center of the arena before the fourth round, so he can reach the lizard anywhere to breathe again.
FeO breathes. E-L takes 1, having 41 HP left.
Four rounds later, FeO breathes. E-L has 38 HP left.
Three rounds later, FeO breathes. E-L has 36 HP left.
Let me know if I have to continue this.
FeO breathes. E-L takes 2, having 42 HP left. FeO has to wait four rounds to breathe. FeO will make sure he is in the center of the arena before the fourth round, so he can reach the lizard anywhere to breathe again.
FeO breathes. E-L takes 1, having 41 HP left.
Four rounds later, FeO breathes. E-L has 38 HP left.
Three rounds later, FeO breathes. E-L has 36 HP left.
Let me know if I have to continue this.