Sensation520301

Shadow Chaser gains [Sensation] or [Impulsion] boosts by casting 3rd job skills.
Inflicting [Masquerade] on enemies earns you 4 points of [Sensation].
Dealing DMG by casting 3rd job skills manually earns you [Impulsion], with 2 points gained for each target hit, up to 10 points for each cast. Shadow Slash adds 2 points of [Impulsion] when dealing damage, dealing DMG by casting [Agony Spread] gains 3 points of [Impulsion], and 2 points of [Impulsion] grants 1 point of CRIT.