I think either something goes there, or it's "a" instead of "and."
Magnezone can be equipped with Choice Specs to further boost its already massive Special Attack. Thunderbolt badly damages anything that doesn't resist it. Flash Cannon is your best weapon against and Tyranitar, while Hidden Power Grass will deal severe damage to most Ground-types attempting to switch into Magnezone. Finally, Explosion allows Magnezone to go out with a bang when low on health, and also comes with the bonus of maiming Blissey and Snorlax switch-ins.