All specials and ultimates are essence attacks. That means that they will do the corresponding essence of the Primal– fire, ice, earth, storm, void, celestial. These attacks will add “primers” to enemies hit by these attacks. When these enemies are hit by another essence, then it will create an essence burst. Each essence combination has a different essence burst that will greatly increase your damage. For example, when fire and storm are combined, it will create a firestorm which is a whirling fiery tornado that damages enemies in its path.