G-Max Sandblast inflicts damage to a target and binds the target for four to five turns. This binding effect is similar to Sand Tomb, except that it doesn't end prematurely if the user switches out or faints. Its power and whether it is a special or physical move depends on the move it is based on.
This article is part of Project Moves and Abilities, a Bulbapedia project that aims to write comprehensive articles on two related aspects of the Pokémon games.