• Have sufficient MP.
     
• If using spells from the skill tree.
  • Equipped with a Wand, Rod, Staff, or Magic Tome.
  • Imprinted the spell model, and invest skill points to learn the spell.
  • Chant the keyword. Can be said with the thought, but the spell name must be said out loud.
    • ex: "O Fire, burn my enemies! Fireball!"
  • Dynamic skill level. The user can adjust the spell level they want to use.
    • ex: Learned Fireball Lv10, but used only Lv5 to shorten the cast time.
  • Unlimited activation.
       
• If using spells from the equipment.
  • No restriction on weapons used. Can casts the spells while equipped with a sword.
  • No chant is needed, but the spell name must be said out loud.
  • Fixed skill level. The user cannot adjust the spell level they want to use.
    • ex: Hecate can use Waterbolt spell from the Ring of Aqua, but it was fixed at Lv5. 
  • Limited to a few number of activation.
       
• If using Spell Scrolls.
  • Just activate the scrolls by tapping the hotkey, or rip the scrolls manually.
  • The spells will not activate if the user did not have sufficient MP.
  • Fixed skill level, the same as using a skill from the equipment.
  • Spell Scrolls are consumable items.  

• Wand: About a knife length.
  • Fast cast time, but low power.
  • Cast time decreased by ~10%, Spell efficiency increased by 0~10%.
    ­   
• Rod: About a sword length.
  • Moderate cast time and power.
  • Normal cast time, Spell efficiency increased by 10~20%.
    ­   ­   
• Staff: About a spear length.
  • Long cast time, but high power.
  • Cast time increased by ~100% or higher, Spell efficiency increased by ~50% or higher.
    ­   
• Magic Tome: A book contains a lot of spell models.
  • If there is no conflict with the Jobclass, these spell models can be imprinted into the skill tree, which can then be invested with skill points.
  • If the book is equip-able, the user can use the spells in the book for a limited number of activations per day, regardless of job class. (Equipment skills).
  • In an emergency, the page in the book with the spell model written on it can be torn to activate the spell instantly (this is like using Spell Scrolls).
    • MP consumption still occurs normally.
    • The ripped page can't be restored.

Base time:

• Tier 1 (Mage spells)
  CT: 0.1 sec × SkillLv ⇒ (Lv1 = 0.1 sec; Lv10 = 1 sec)
  CD: 2 secs.
  • Bolt type spells (Firebolt, Waterbolt, Coldbolt, Thunderbolt, ...)
  • Stone Spike, Wind Slash, ...
    ­     ­
• Tier 2 (Wizard or Witch spells)
  CT: (0.5 sec × SkillLv) + (2 × (SkillLv-1)) ⇒ (Lv1 = 0.5 sec; Lv10 = 23 secs)
  CD: 1.5 sec × SkillLv.
  • Flame Lance, Water Vapor, Ice Barrage, Wind Barrage, ...
    ­    
• Tier 3 (Archwizard or Archwitch spells)
  CT: (1.5 sec × SkillLv) + (60 × (SkillLv-1)) ⇒ (Lv1 = 1.5 sec; Lv10 = 555 secs)
  CD: 3 secs × SkillLv
  • Vermillion Blast, Tidal Wave, Earthquake, Cyclonic Storm.
    • The one Hecate used is only Lv1, so the cast time is still low.
      ­    
• Tier ??
  • Death Sentence (Lv1) - CT: instant; CD: ???.
  • Mana Explosion (Lv1) - CT: 1 minute; CD: ???.
       

Reduction:

• Shadow Walker shoes reduced the skill cooldown by (UpgradeLv)%.
  • ⇒ (+5 Shadow Walker = -5%)
• Wand type weapon reduced the cast time by 10%.
• Every 3 DEX reduced the cast time by 0.1 sec.
• Every 5 DEX reduced the cooldown by 0.1 sec. 
  • Hecate's current DEX is (1 + 24)
    • ⇒ Cast time reduction by 0.83 sec.
    • ⇒ Cooldown reduction by 0.5 sec.
         

Spell Scrolls did not have cast time or cooldown.