Selfish Basalt

The Selfish Basalt is a Shadow found in Persona 4. It is found on the 7th and 8th floor of Kanji's Midnight Channel world Steamy Bathhouse. One thing worth mentioning is that while the Selfish Basalt may be the only Basalt that is not Resistant to Physical attacks, It makes up for it by resisting Almighty Skills (including the All-Out Attack), making it ill-advised to use this skill against this Shadow. They drop Selfish Ornaments when defeated. It also drops Coal, an item required to complete Quest 11: Acquire Coal.

Strategy
Simply use any type of Magic Spells. Using Almighty attacks (including the All-Out Attack) is ill-advised.