"Hikari, Scald on Steelix!"
"Magnezone, Mirror Shot at Marowak; Steelix, Rock Slide!"  Hikari launched a scalding hot jet of water at Steelix that hit it for super-effective damage and left it burnt.  Magnezone let off a flash of light from its polished body at Marowak.  It was on its last legs figuratively speaking.  Steelix unleashed a rock slide on both Marowak and Hikari.