The evocation school of magic includes spells that manipulate energy or tap an unseen source of power in order to produce a desired end. In effect, they create something out of nothing. Many of these spells produce spectacular effects, and evocation spells can deal large amounts of damage. Many iconic offensive spells such as magic missile, lightning bolt and fireball are of the evocation school. A wizard who specializes in evocation is known as an evoker.
A channeling spell channels divine or other power. Holy smite is a channeling spell.
A control spell manipulates forces and moves inanimate objectss. Powerful control spells can manipulate forces on a large scale, even altering weather patterns. Gust of wind is a control spell.
An energy spell creates or manipulates energy, such as fire or electricity. Fireball is an energy spell.