Bastet

Bastet (バステト女神) is the Stand of Mariah featured in Stardust Crusaders.

Appearance
Bastet has a simplistic form resembling an American outlet that can be placed anywhere. It represents the Egyptian Goddess Bastet.

In Heritage for the Future, Bastet can be seen as a ethereal Humanoid feline bust when Mariah blocks or performs certain actions, similar to Anubis' appearance

Ability
Magnetic Attraction: When a person touches the outlet, the person will become irradiated with a strong magnetic force that attracts nearby metallic objects towards the victim. The magnetic force will gradually become stronger, to the point where objects attracted to the person will either overwhelm or simply impale them.

Additionally, more than one person can be placed under the same "magnetic curse". Multiple people under the same magnetic attraction will even be attracted towards each other. If the victims are far enough from Mariah, the "magnetic curse" will wear off.

Trivia

 * Araki was inspired to create Bastet during his time writing about in the manuscript to The Lives of the Eccentric, having been interested in electromagnetism at that time.