In Riviera, the term Ultima!! is used only for the two Execution-level Over Skills: Ein's Disaresta and Ledah's Lost Seraph. These skills feed on how filled the Overdrive Meter is; when at Level 3, the true power of the skill is unleashed. Ultima!! skills can be used whenever the player sees fit, but the Meter will shatter after using them, preventing further use of over skills.