Concealment

Concealment in DDO refers to Concealment Miss Chance

It is one of the three major Miss chance checks in game, along with Incorporeal and Dodge, that can occur during an attack if the conditions for its occurance is met.

Concealment comes in two forms:

• A beneficial (buff) form that is applied to players and allies, through equipped items or effects, that forces enemy attacks on the beneficiary to include a check for Concealment Miss Chance.
• An negative (debuff) form, that is an effect which is applied to enemies via a negative condition, forcing their attacks to include a check for Concealment on all those they attack whilst the negative condition persists.

When the trigger for Concealment is activated, the attack must pass a roll that is greater than the total amount of Concealment that is protecting the target.

Generally, multiple concealment bonuses of the same type do not stack, whether beneficial or offensive in nature, only the greatest concealment number applies. Currently almost all of them use the same bonus type - enhancement. (A couple of special exceptions are listed in the Stacking effects section below.)

Sources

Buff Concealment

Note: All of these sources can be negated by True Seeing (spell)

Permanent Effects

• 5% enhancement bonus to concealment
  • Dark Apostate enhancements: Core 2, Shadow Shrouding. Transformation.

• 10% enhancement bonus to concealment
  • Item effect: Dusk
  • Dark Apostate enhancements: Core 3, Enhanced Shadowform I. Shadow Shrouding upgrade.

• 15% enhancement bonus to concealment
  • Dark Apostate enhancements: Core 4, Enhanced Shadowform II. Shadow Shrouding upgrade.

• 20% enhancement bonus to concealment
  • Item effects: Blurry, Smoke Screen
  • Dark Apostate enhancements: Core 5, Enhanced Shadowform III. Shadow Shrouding upgrade.
  • Deep Gnome enhancements: Tier 2, Permanent Blur
  • Gnome enhancements: Tier 2, Permanent Blur
  • Feydark Illusionist enhancements: Tier 2, Bend Light
  • Warpriest enhancements: Core 4, War Caster: Blur
  • War Soul enhancements: Core 4, War Caster: Blur
  • Vile Chemist enhancements: Tier 2, Stone of the Subliminal. Requires an equipped Orb.

• 25% enhancement bonus to concealment
  • Item effect: Lesser Displacement
  • Blightcaster Wild Shape, Hive Keeper
  • Dark Apostate enhancements: Capstone, Master of Shadows. Shadow Shrouding upgrade.
  • Enlightened Spirit enhancements: Tier 5, Displace Summons. Pets, Summons or Charmed Monsters only.
  • Shifter enhancements: Tier 4, Exceptional Shifting - Wild Magic. While raging only. Requires Wildhunt Shifter.

• 27% enhancement bonus to concealment
  • Legendary Greensteel: Smoke Tier 3

• 50% enhancement bonus to concealment
  • Blightcaster Wild Shape, Hive Master
  • Dragon Lord enhancements: Tier 4, Untouchable Soul
  • Feydark Illusionist enhancements: Tier 5, Permanent Displacement
  • Pale Master enhancements: Tier 2, Cloak of Night. Requires blocking in Undead Shroud
  • Tiefling Scoundrel enhancements: Tier 4, Sonata of Darkness. Requires standing in Obscuring Darkness (Tier 1 SLA)

Temporary Effects

• 20% enhancement bonus to concealment
  • Spell: Blur. 1 min/CL duration.
    • Archmage enhancements: Core 2, Illusion II: Blur
  • Henshin Mystic enhancements: Tier 3, Kata of Wind. 90 sec CD, 60 sec duration, requires Path of Harmonious Balance. Works on friendly NPCs.

• 25% enhancement bonus to concealment
  • Tabaxi Trailblazer enhancements: Tier 4, Escape Artist. 1 min CD, 20 sec duration. Triggers on tumbling.

• 50% enhancement bonus to concealment
  • Spell: Displacement. 6 sec/CL duration.
    • Archmage enhancements: Core 3, Illusion III: Displacement
    • Eladrin enhancements: Tier 4, Winter Spell - Displacement
    • Elf enhancements: Tier 3, Greater Dragonmark of Shadow. Dragonmark bonus.
    • Enlightened Spirit enhancements: Tier 5, Displacement
    • Shadar-kai enhancements: Tier 3, Displacement
  • Spell: Displacement Draught. 6 sec/CL duration
  • Spell: Shadow Walk. Lost if you interact/fight. 1 min/CL duration.
  • Spell: Smoke Bomb. Lost if you interact/fight. 6 sec CD, 12 sec duration.
    • Dark Hunter enhancements: Tier 4, Smoke Bomb. 25 sec CD, 12 sec duration.
  • Dark Apostate enhancements: Tier 4, 5 sec duration, 180 sec CD, involuntary proc.
  • Horizon Walker enhancements: Tier 3, Two Places at Once: 12 sec duration, triggers whenever Manyshot or Scattershot are used.

• 95% enhancement bonus to concealment
  • Feydark Illusionist enhancements: Capstone, Master Illusionist. 180 sec CD, 15 sec duration, affects entire party, infinite range.

Stacking effects

• Shadowdancer's Tier 3 enhancement Depths of Darkness gives a +25% concealment bonus while in Shadowdancer's Destiny Mantle. This stacks with your highest enhancement bonus to concealment.
• Twilight's Cloak sentient filigree set: With 5 or more Twilight's Cloak filigrees equipped, you gain an extra 5% concealment.

Debuff Concealment

Unlike the other above sources, none of these are negated by the True Seeing (spell).

As stated above, none of the effects below stack with each other or any of the aforementioned "buff" effects, except where stated otherwise. Only the greatest effect applies.

• All "Cloud" effects grant a 20% enhancement bonus to concealment to those standing inside of the cloud.
  • Level 1 Spell: Obscuring Mist. 30 sec duration.
    • Tiefling enhancements: Tier 1, Obscuring Darkness
    • Tiefling Scoundrel enhancements: Tier 1, Obscuring Darkness
  • Level 2 Spell: Fog Cloud. 40 sec + 2/CL duration.
  • Level 3 Spell: Stinking Cloud. 40 sec + 2/CL duration.
  • Level 4 Spell: Solid Fog. 40 sec + 2/CL duration. (Blocked by Freedom of Movement and Red/Purple named are immune)
  • Level 5 Spell: Cloudkill. 40 sec + 2/CL duration.
  • Level 6 Spell: Acid Fog. 40 sec + 2/CL duration. (Blocked by Freedom of Movement and Red/Purple named are immune)
  • Level 8 Spell: Incendiary Cloud. 30 sec duration.

• Condition: Blindness. Attacked enemies have 50% concealment.