MDEF

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Magic Defense is the total magical defense that is factored upon magic damage, which is generally based on MATK as whole or partially. However, there are exceptions.

The descriptions used here refer to Hard and Soft MDEF. These names are used for clarity. The vast majority of players do not use these terms in general conversation, and instead refer Armor Mdef (hard) and INT Mdef (soft). Hard MDEF works as a relative reduction, whereas Soft MDEF is a subtractive reduction.

Hard MDEF

Effects of Hard MDEF on incoming damage

Hard m. defense, also known as "armor" or "equipment" m. defense reduces, incoming magic damage multiplicatively.

  • Damage after Hard MDEF = Damage × [(1000 + HardMDEF) ÷ (1000 + HardMDEF × 10)]

For example, a player with a Hard MDEF of 60 will have incoming m. damage reduced by about ⅓, and a player with a Hard MDEF of 125 will have incoming damage reduced by half.

Hard m. defense has a base value of 0, and is increased by equipment, some skills, and items.

Additive Bonuses

Item/Skill Max Modifier Additional notes
4240.png Arclouze Card
+3 Shield. Only if refined to +5 or lower.
4290.png Cat O' Nine Tails Card
+3 Footgear. May reflect magic back to the caster.
4386.png Detardeurus Card
+1 Armor. Gives immunity to Frozen.
4405.png Frus Card
+3 Armor. Mage class only. May reflect magic back to the caster.
4278.png Gibbet Card
+5 Headgear. Only if refined to +5 or lower.
4150.png Goat Card
+5 Armor. Only if refined to +5 or lower.
4287.png Kapha Card
+8 Garment. Only if refined to +5 or lower.
1646.png La'cryma Stick
Var +UpgradeLv
4200.png Megalith Card
+7 Footgear. Only if refined to +5 or lower.
1661.png Mental Destroyer
+20
4150.png Rideword Card
+1 Headgear. Acolyte class only.
4414.png Seeker Card
+10 Shield.
4220.png Solider Card
+2 Armor.
4226.png Sting Card
+5 Shield. Only if refined to +9 or higher.
4114.png Tao Gunka Card
-50 Armor. Doubles Max HP.
4211.png Vocal Card
+3 Garment.

Multiplicative Bonuses

Item/Skill Max Modifier Additional notes
Assumptio.png Assumptio
+100%

Soft MDEF

Soft m. defense, also known as "INT" m. defense, reduces incoming magic damage directly.

SoftMDEF      = INT + VIT ÷ 5 + DEX ÷ 5 + BaseLv ÷ 4
TotalSoftMDEF = [(SoftMDEF + BonusA) × (1 + BonusB ÷ 100)]
  • BonusA is the sum of additive bonuses.
  • BonusB is the sum of multiplicative bonuses.

Additive Modifiers

Multiplicative Modifiers

Bypassing MDEF

The equipment below are known to bypass MDEF.

Weapons

Weapon Notes
1665.png Piercing Staff [2]
Bypass 10% of hard magic defense of normal monsters and boss monsters when performing a magical attack. Bypass an additional 1% of hard magic defense of normal monsters and boss monsters when performing a magical attack per upgrade level of the item.
1636.png Thorn Staff of Darkness
Bypass 1% of Mdef of Normal, Boss, Player targets when performing a magical attack per upgrade level of the item.

Armor

Weapon Notes
28507.png Magician's Gloves [1]
Bypass 50% of hard magic defense of normal monsters, Boss monsters and players when performing a magical attack.
18794.png Ordinary Black Magician Hat [1]
Bypass 10% of hard magic defense of normal monsters when performing a magical attack. Bypass an additional 4% of hard magic defense of normal monsters when performing a magical attack per upgrade level of the item, where the effect caps out at 30%.
22104.png Pororoca Shoes
Set Bonus with La'cryma Stick: Bypass 5% of hard magic defense of normal monsters and Boss monsters when performing a magical attack per level of Frost Nova known.
5360.png Wickebine's Black Cat Ears
Adds a 5% chance to bypass 25% of hard magic defense on normal monsters and players for 5 seconds when performing a magical attack.
28565.png Perverse Demon Mask [1]
Bypass 15% of hard magic defense of normal monsters, Boss monsters and players when performing a magical attack for every 18 base STR.

Cards

Card Notes
4365.png High Wizard Card
Bypass 100% of hard magic defense of normal monsters when performing a magical attack.
4440.png Necromancer Card
When compounded to a Rod, Int +1 and ignores 2% of the MDEF of enemies.
Neo Punk Card & Big Ben Card Set Ignores 50% of Formless and Demon monster's Magic Defense Rate.
Nightmare Arclouse Card & Nightmare Mimic Card Set Ignore 50% magical defense of Brute and Undead monsters.

See Also