Updated 2026-09-27
한국어Boots of Stormy Clamour is an item of Uncommon rarity. Type: Boots. Recorded sources: Act 1 · Underdark · Found in the world. See acquisition details below for conditions. Weight 0.55, Value 70 gold. Passives: Arcane Echomalefaction.
Uncommon
Arcane Echomalefaction: When the wearer inflicts a condition upon a hostile creature, they also inflict 2 turns of 
Reverberation.
Peals of thunder rumble at the back of your skull with every step taken in these boots.
Act 1 Found in the world Underdark
Effect
ReverberationReverberation weakens Strength, Dexterity, and Constitution saves and can trigger extra damage and Prone at its threshold.
Apply it before an effect requiring one of those saves. It does not also weaken Intelligence, Wisdom, or Charisma saves.
At 5 or more turns, the Thunder damage and the check for Prone are separate. Dealing the damage does not guarantee the target falls.
Core rule
Saving throwsA saving throw determines whether you resist or avoid a harmful effect, such as a spell or trap.
Roll a d20 using the ability named by the effect, then add the relevant modifier and saving-throw bonuses. Meeting the Difficulty Class succeeds.
Success may mean half damage or avoiding the effect entirely. A successful save does not always mean zero damage.
Core rule
d20 rollsA d20 has twenty possible results, from 1 to 20. It is used to resolve attacks and many uncertain actions.
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.
Answer
When an item's specified trigger is met, it applies Reverberation to the wearer or target.
Based on in-game textArcane Echomalefaction
When the wearer inflicts a condition upon a hostile creature, they also inflict 2 turns of
OnStatusApplyEnemy() and not Self() and not StatusId('MAG_THUNDER_REVERBERATION') and not StatusDoesNotInvokeOnStatusApply()Answer
Each remaining stack applies a negative modifier to Strength, Dexterity, and Constitution Saving Throws.
Derived from game dataMAG_THUNDER_REVERBERATIONAffected entity has a -1 penalty to Strength, Dexterity, and Constitution
When the entity has 5 or more turns of Reverberation, it takes 1d4 Thunder damage and possibly fallsProne. The condition is removed afterward.
CreaturesImmune to Thunder damage can't receive Reverberation.
Core rule
Repeated effects may grow stronger, last longer, replace one another, or fail to combine.
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.
Answer
The game data below distinguishes an entry's listed duration from the duration actually applied.
Derived from game dataMAG_THUNDER_REVERBERATIONAffected entity has a -1 penalty to Strength, Dexterity, and Constitution
When the entity has 5 or more turns of Reverberation, it takes 1d4 Thunder damage and possibly falls
Creatures
Answer
When the threshold is reached, stacks are consumed and an additional effect occurs.
Derived from game dataMAG_THUNDER_REVERBERATIONAffected entity has a -1 penalty to Strength, Dexterity, and Constitution
When the entity has 5 or more turns of Reverberation, it takes 1d4 Thunder damage and possibly falls
Creatures
Answer
After applying it several times, follow it with an effect that calls for a Saving Throw, but do not assume it stacks on every hit.
Codex commentary
