[st.patrik]

Storm's precision reduction shouldn't affect your Magma casters as much at short range, so if you keep them pretty far forward and wait for your enemy to close, you should hit some stuff. This would be especially effective if you are buffing your army, because then they may be able to hold the attack for several turns, giving your mages a nice close unmoving target to aim for.

Of course don't use Magma stuff with Wooden Warriors, because there's some element of fire involved, which your guys would be vulnerable to.