Builder’s Gate

Updated 2026-09-27

한국어

Coruscation Ring is an item of Uncommon rarity. Type: Rings. Recorded sources: Act 2 · Last Light Inn · Container. See acquisition details below for conditions. Weight 0.05, Value 40 gold. Passives: Arcane Radiance.

Coruscation Ring

Uncommon

Arcane Radiance: When the wearer deals spell damage while illuminated by a light source, they also inflict Radiating Orb upon the target for 2 turns.

Provocative light blooms from the engraved contours of this ring.

How to obtain

Act 2 Container Last Light Inn

0.0540

Effect

Radiating Orb

Radiating Orb reduces the target’s attack rolls according to its remaining stacks.

Stage 3 · Combining effectsEquipment and stacking

Applying it to an enemy makes that enemy’s attacks less reliable. It does not directly improve your attack bonus or reduce the enemy’s Armour Class.

Stacks diminish with time and when the affected creature makes attack rolls. Enemies that attack repeatedly can spend the duration quickly.

Sources and review date

Reviewed: 2026-09-14

Derived from game data
  • Defense
  • Radiant
  • Multi-hit
Effect permalink

Core rule

Attack rolls

Core rule permalink

An attack roll decides whether an attack hits. The total must meet or exceed the target’s Armour Class.

Stage 1 · Combat basicsAttacks and dice

Roll a d20 and add the applicable ability modifier, proficiency bonus, and other attack bonuses. The weapon or spell determines which ability applies.

Damage is calculated after the hit is decided. A larger attack-roll total does not itself deal more damage.

Sources and review date

Reviewed: 2026-09-14

Based on in-game text
  • Attack
  • Defense

Core rule

d20 rolls

Core rule permalink

A d20 has twenty possible results, from 1 to 20. It is used to resolve attacks and many uncertain actions.

Stage 1 · Combat basicsAttacks and dice

Add the relevant ability modifier, proficiency, and other bonuses to the die. Meeting the target number is enough to succeed.

Attack rolls, saving throws, and ability checks use different bonuses. A bonus to one does not automatically apply to the others.

Sources and review date

Reviewed: 2026-09-14

Based on in-game text
  • Attack
  • Defense

Answer

Radiating Orb Application

When an item's specified trigger is met, it applies Radiating Orb to the wearer or target.

Based on in-game text

Trigger source

Arcane Radiance

When the wearer deals spell damage while illuminated by a light source, they also inflict Radiating Orb upon the target for 2 turns.
Trigger context
OnDamage
Applies to
Target
Application condition
IsSpell() and not Item()
Application chance
100%
Application duration
2 turns

    Answer

    Radiating Orb Stack Adjustment

    Each remaining stack applies a negative modifier to Attack Rolls.

    Derived from game data
    How stacks work
    The remaining stacks affect this effect.
    Roll example
    The effect increases by 1 per stack.
    Game status key
    MAG_RADIANT_RADIATING_ORB

    In-game text

    Affected entity has -1 to Attack Rolls for each remaining turn. It also sheds bright light in an area surrounding it.

    Reduce the duration by 2 each time the entity makes an attack.

      Core rule

      Stacking

      Core rule permalink

      Repeated effects may grow stronger, last longer, replace one another, or fail to combine.

      Stage 3 · Combining effectsEquipment and stacking

      For conditions such as Radiating Orb, remaining turns also affect strength. In contrast, repeated resistance does not keep halving damage.

      Check whether the effect stacks and whether it has a cap. A shared display name does not mean the values from every variant can be added together.

      Sources and review date

      Reviewed: 2026-09-14

      Derived from game data
      • Multi-hit

      Answer

      Radiating Orb Duration

      The game data below distinguishes an entry's listed duration from the duration actually applied.

      Derived from game data
      Status duration
      2 turns
      Game status key
      MAG_RADIANT_RADIATING_ORB

      In-game text

      Affected entity has -1 to Attack Rolls for each remaining turn. It also sheds bright light in an area surrounding it.

      Reduce the duration by 2 each time the entity makes an attack.

        Answer

        Using Radiating Orb

        Apply it repeatedly to enemies that make frequent Attack Rolls, but do not read it as a permanent reduction to hit chance.

        Codex commentary

          Equip in build2 available slots — opens the first slot

          Other items: Rings