Combustion [A horrendous blast reigns fire on enemy infantry] [Fireball by Eedenartwork]       Combustion is a subcategory of fire evocation in which a mastered veteran fire-mage is able to form concussive blasts through advanced spellcasting. By the expense of extra mana and time, a fireball (or what have you) is capable of expanding with such force that it no longer merely douses the radius in flames but also expels large amounts of kinetic energy in order to create a