Hot Egg

These creatures possess an unknown heat source within them, and merging one with a fire hero soul can improve its abilities. They're a sought-after prize for any adventurer seeking mighty hero souls, but actually getting your hands on one is extremely difficult. Besides their inherent rarity, they're far more aggressive than their appearance would suggest, and will self-destruct as a defense mechanism, taking its surroundings with it... Or so the rumors say, anyway.