Psyshock is a Psychic-type move in the Pokémon series, introduced in Generation V. It deals damage based on the target's Special Defense rather than their regular Defense, making it effective against Pokémon with high physical defenses but lower special defenses. This unique mechanic allows trainers to strategize more effectively during battles. The move has a base power of 80 and an accuracy of 100%, making it reliable in combat. It is particularly useful for Psychic-type Pokémon, such as Mewtwo or Espeon, who can take advantage of their high Special Attack stats to deal significant damage to opponents.