Dark Knight Job Ability.
Dark Rush: Reduces both the Cast Time and MP cost of the next spell.
*Dark Rush is obtained as a "charge" after using a weapon skill.
**Optionally Dark Rush may wear off after 30 seconds after a Weapin Skill.
Dark Rush I:
Casting time -15%, MP cost -15%
Obtained: Dark Knight Level 30
Dark Rush II:
Casting time -30%, MP cost -30%
Obtained: Dark Knight Level 45
Dark Rush III:
Casting time -45%, MP cost -45%
Obtained: Dark Knight Level 60
Dark Rush IV:
Casting time -60%, MP cost -60%
Obtained: Dark Knight Level 75
Dark Rush V:
Casting time -75%, MP cost -75%
Obtained: Dark Knight Level 90
This will help Dark Knight utilize all spells in its aresenal and get those Magic Bursts out after a skill chain.