Max-Rockfall is a Rock-type Max Move introduced in Pokémon Sword and Shield. It has a base power that varies depending on the original move it replaces, ranging from 100 to 150. Max Moves always hit, ensuring 100% accuracy. When Max-Rockfall is used, it summons a sandstorm that lasts for five turns, providing additional strategic benefits such as dealing chip damage to non-Rock, Ground, or Steel-type Pokémon at the end of each turn and boosting the Special Defense of Rock-type Pokémon. This secondary effect makes Max-Rockfall a valuable move in both Dynamax strategies and weather control in competitive play.