So far for his evolvable abilities and magics, Darius had used, Indomitable's primary Skill Impreishable and the secondary skill Overdraw. For Thur's indignation he had used the sendary ability Thur's Summons and the Tertiary ability Mjolnir's Fall. For Stupendous Might he had used the primary ability absolute power and the secondary ability Diamond skin. That means he had not used the Indomitable tertiary skill, Thur's indignation's primary skill and Stupendous Might's tertiary skill.
These three skills he had not used were powerful but would cause and unneccesary fuss. They would increase his power but they were overwhelming. Once again Darius had an internal struggle. His final decision was to use at least one of them. The least overt skill he had from those left.