G-Max Steelsurge inflicts damage and sets an entry hazard around the target Pokémon. Pokémon on the target's field receive damage upon switching in. The amount of damage inflicted upon switching in is affected by the effectiveness of Steel against the target. It also does not stack if multiple layers are set. It does not damage Pokémon with the Ability Magic Guard. Rapid Spin removes the hazard from the user's side of the field if it affects its target; Defog removes the hazard's effect from both sides of the field.
The damage is taken from the victim's maximum HP, and follows:
| Type effectiveness
|| Damage (Max. HP)
Its power and whether it is a special or physical move depends on the move it is based on.
|| A Steel-type attack that Gigantamax Copperajah use. This move scatters sharp spikes around the field.
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