Mismagius

“Its cries sound like incantations. Those hearing it are tormented by headaches and hallucinations.”

— Pokémon Diamond

“It chants incantations. While they usually torment targets, some chants bring happiness.”

— Pokémon Pearl

“Its cry sounds like an incantation. It is said the cry may rarely be imbued with happiness-giving power.”

— Pokémon Platinum