Applies the Rock Damage Field effect to the opponents' field of play. (Rock Damage Field: The sync pairs will take Rock-type damage whenever they take an action.)
Gigantamax Coalossal causes a giant stone slab to rise from the ground. The stone slab then falls down, shattering into pieces of stone that are sent flying all around Gigantamax Coalossal.
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.