User:Rocco is a gamer/Sandbox2

Telepathy (Those with the Joestar birthmark have a psychic bond with each other with said birth mark allowing them to sense and feel each other. This allowed the Joestars alive at the time to gain a Stand when DIO used a Stand Arrow on himself)

Sheer Will (To use a Stand you need the spirit to fight or else the Stand will harm its user making sick with a deadly fever. Stands are tied to the mental abilities of the user, with Stands becoming weaker if the users mental abilities are weakened)