Shouldn't works like a protection in area? Because when we use this spell, it makes an aura like wide guard.
and by the bulbapedia:
"Mat Block protects all Pokémon on the user's side of the field from any moves except status moves for that turn."
and by the bulbapedia:
"Mat Block protects all Pokémon on the user's side of the field from any moves except status moves for that turn."