In most cases they are weaker than single-target augment spells, but they can buff several units at once. Augment (area) - spells from this group are identical to the one describe above.Effects that this group of spells offer can make a unit significantly stronger, capable of defeating several entire units of enemies on their own. Spells from the Augment group are always cast on a single unit.
Those can increase the effectiveness and combat capabilities of a unit by, for instance, giving them damage reduction, or can even offer additional properties, like a complete immunity to discipline loss for a short time. The main difference, aside from the effects they offer, is the way in which the spells work. There are different types of spells available in the game. Spells must first be unlocked with skill points.
