Twin-Beam is a Psychic-type move with 40 power and 100% accuracy. It hits twice in one turn, making its effective base power 80 if both hits land. Each strike has a separate accuracy check, which means there's a chance that one hit might miss while the other lands. Due to its twin-hit nature, Twin-Beam can break substitutes and hit through abilities or items that provide protection against a single attack. It's also useful for dealing with Focus Sash users or Pokémon that rely on Sturdy to survive one-hit KO moves. Twin-Beam adds strategic depth to battles by offering consistent damage output with the added benefit of multi-hit mechanics.