How to Dragoon per Second: A DPS Paradigm

[aleph_null]

-A more potent version of Geirskogul (either ST or MT) that uses all remaining BoTD duration (best used before a boss becomes invincible or before a target dies).

Or before you refresh botd, just like how you'll use one last geirskogul to use up the remaining botd timer before refreshing it. While we can't say anything about how this skill works, it does look uncannily similar to botd/geirskogul effects.