diff --git a/core/src/main/assets/messages/misc/misc.properties b/core/src/main/assets/messages/misc/misc.properties
index 9d1ac317a..b577ba1a5 100644
--- a/core/src/main/assets/messages/misc/misc.properties
+++ b/core/src/main/assets/messages/misc/misc.properties
@@ -215,7 +215,7 @@ challenges.no_herbalism_desc=There seems to be no clean water left in this accur
 challenges.swarm_intelligence=Swarm intelligence
 challenges.swarm_intelligence_desc=Watch out, the dungeon monsters are getting smarter!\n\n- When an enemy notices you, nearby enemies are drawn to that location
 challenges.darkness=Into darkness
-challenges.darkness_desc=It is a dungeon after all!\n\n- Regular visible distance dramatically reduced\n- A torch appears on each floor\n- Light buff lasts for less time
+challenges.darkness_desc=It is a dungeon after all!\n\n- Regular visible distance dramatically reduced\n- A torch appears on each floor\n- Other light sources are 1/5 as effective
 challenges.no_scrolls=Forbidden runes
 challenges.no_scrolls_desc=A certain rune is harder to find. Unfortunately, it's always the most useful one.\n\n- Half of the dungeon's upgrade scrolls are removed
 challenges.champion_enemies=Hostile champions
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/abilities/mage/ElementalBlast.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/abilities/mage/ElementalBlast.java
index 458096895..280ab5983 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/abilities/mage/ElementalBlast.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/abilities/mage/ElementalBlast.java
@@ -22,6 +22,7 @@
 package com.shatteredpixel.shatteredpixeldungeon.actors.hero.abilities.mage;
 
 import com.shatteredpixel.shatteredpixeldungeon.Assets;
+import com.shatteredpixel.shatteredpixeldungeon.Challenges;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
@@ -408,7 +409,11 @@ public class ElementalBlast extends ArmorAbility {
 
 						//*** Wand of Prismatic Light ***
 						} else if (finalWandCls == WandOfPrismaticLight.class){
-							Buff.prolong( hero, Light.class, effectMulti*50f);
+							if (Dungeon.isChallenged(Challenges.DARKNESS)){
+								Buff.prolong(hero, Light.class, effectMulti * 10f);
+							} else {
+								Buff.prolong(hero, Light.class, effectMulti * 50f);
+							}
 
 						}