To be fair, tooltips in this game are usually poorly written if not totally obscure in some cases.
Take mirage dive, for instance:
"Delivers an attack with a potency of 200.
Additional Effect: Strengthens the gaze of your Dragon Gauge by 1 while under the effect of Blood of the Dragon or Life of the Dragon.
Can only be executed when Dive Ready."
How do you get "dive ready"? I mean, you'll eventually find out during your castrum abania spam, but seriously...