I think this was rated low due to the story not making much sense.

Base +6, Whorny +8, F-O-X +7

Doesn't seem that confusing to me. He's trying to cross the lava but needs to mix up something to protect him from the heat, he accidentally makes a MTF/Wyvern TF potion. It starts taking affect in the middle of the fight resulting in him getting bred by the wyvern. Then he tries weighing up if it's worth trying to continue onward or stay with the new sexy fun wyvern life before choosing the later.

Base +4