G-Max Wind Rage inflicts damage and removes the effects of screen-creating moves and entry hazards, such as Spikes or Stealth Rock, on the target's side of the field, along with any terrains. 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.