Many spells are described as magic missiles - for example, Fireball. In this case, the Wizard conjures Pa ball of flame and hurls it at a target. All magical missiles are thrown or projected in this fashion.
A magic missile can only be cast at a target if it would be a viable target according to the rules for shooting. For example, the Wizard must be able to see the target, and characters can only be picked out from a unit they have joined in the same circumstances as with normal missile fire, as described under 'shooting at characters'. Unless otherwise noted, magic missiles hit their targets automatically.
Unless otherwise specified, a Wizard cannot cast these spells if he, or the unit he is with, is engaged in close combat.