You have the ability to let one of your characters lead, and the other follows automatically. However, there may be times when you only want one character to move into a specific area or battle. Of course, I discovered this after Seliza died twice. The enemies you encounter have various levels of difficulty to beat in a fight. You might need to get rid of a pack of pesky vermin or face this big ugly creature who will laugh in your face as you try to beat him with a stick.
Spells come in the form of scrolls which have a one-time use or books.
Each book can be used throughout the game as long as you have satisfied the magic experience requirement. This is not a static spell. The spell can increase as your magic skills increase. Each spell has a 3 levels that either increases the effectiveness of the spell or decreases the amount of mana to use the spell. The combination of weapons and spells is a must for advancement to the higher levels.