Wanna know why? To my knowledge, chestnaught only appears as a boss, and endeavor when the boss is charging the big attack to make it wobble would be the best option, ...right? normally, yes, but there's 1 problem, Spiky Shield, OH MY GOD I HATE THAT SO MUCH! right before it starts charging, it uses Spiky Shield, so Endeavor, is useless. What do you do now? I dunno! Pray that it Sparkles? Yeah no, if Chestnaught is the last Pokemon i need to get for the Pokedex, I would not be suprised.