Psychic Immunity was a power associated with the lightning element. It basically created an electrical shield over its user's mind and soul, capable of completely hiding and protecting that part of its user.
With this new power, Vicente could, for example, resist Casey's power to manipulate memories and thoughts entirely. In fact, even a Sovereign capable of hearing thoughts would not be able to act against Vice now.
That was the defensive part of the ability. But it could also be used to attack opponents mentally!
Vicente could use this new ability in combination with his first power to manipulate metals in the bodies of targets and transmit mental attacks into the bodies of enemies. Through the electrical nature of his new power and the ability of metals to transmit electricity, he could attack his targets from the inside out.
