The Blue Nightmare Cobalt JewelLimited to: 1 Radius: LargeGain (6-10)% of Lightning Damage as Extra Chaos Damage Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant Chance to BlockSpell Damage at 50% of its valueWe swell and flood and drown the undeserving beneath our might.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
The Blue Nightmare is a uniqueCobalt JewelCobalt JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket..
Each individual node is rounded down and added separately. Nodes transformed by Timeless Jewels cannot be modified by other jewels and therefore do not apply. However, nodes transformed with tattoos will apply. Mastery passives and socketed jewels in radius do not apply.
Item acquisition
The Blue Nightmare has restrictions on where or how it can drop. It cannot be chanced.
The Blue Nightmare has a chance to drop from Chayula in the Flawless Breachstone version of encounter. In Keepers league, it can be obtained from the Genesis Tree using an Ancient Wombgift or from Grasping Coffers in Hive Fortresses.
Monster restrictions
This item can be acquired from the following monsters:
The Blue Nightmare can be created from the following recipes:
Amount
Part
Description
Meta
6
The DreamerThe Dreamer6Chayula ItemA dark note drips from the dreamer's lips, A honeyed melody. We stand, we fall on his beck and call, for in his dream we're free.
Random Chayula item
A
4
The BreachThe Breach4Breach ItemEver get the feeling you're being watched...?
Random Breach item
A
1
The VoidThe Void1Reach into the Void and claim your prize.
Random divination card set exchange
A
Foulborn modifiers
This unique item can be Foulborn with one or more of the following Foulborn modifiers replacing the corresponding regular modifiers.
Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant Chance to Block Spell Damage at 35% of its value
Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant an equal chance to gain a Power Charge on Kill
Version history
Before version 3.27.0, the Blue Nightmare could be obtained by applying a Blessing of ChayulaBlessing of ChayulaStack Size: 10Upgrades Chayula's Breachstone to a more powerful versionRight click this item then left click an applicable breachstone item to upgrade it. to The Blue DreamThe Blue Dream Cobalt JewelLimited to: 1 Radius: LargeGain (6-10)% of Lightning Damage as Extra Chaos Damage Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant an equal chance to gain a Power Charge on KillWe crash against Chayula's body, and fall like rain into the place we cannot go.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket..
The Blue Nightmare Unique Jewel now has "Gain 6-10% of Lightning Damage as Extra Chaos Damage", and "Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant Chance to Block Spell Damage at 50% of its value" (previously 35%).
It no longer has "Passives granting Lightning Resistance or all Elemental Resistances in Radius also grant an equal chance to gain a Power Charge on Kill".
Existing versions of this Unique can be updated using a Divine OrbDivine OrbStack Size: 20Randomises the values of the random modifiers on an itemRight click this item then left click a magic, rare or unique item to apply it..
Breach Blessings can now be used to upgrade a regular Breachstone into the Flawless version of that Breachstone. Breach Blessings are now rarer as a result. Flawless Breachstone Bosses can no longer drop Breach Blessings or un-upgraded Breach Uniques. They now have a chance to drop upgraded Breach Uniques.
The Red NightmareThe Red Nightmare Crimson JewelLimited to: 1 Radius: LargeGain (6-10)% of Fire Damage as Extra Chaos Damage Passives granting Fire Resistance or all Elemental Resistances in Radius also grant Chance to BlockAttack Damage at 50% of its valueWe coagulate; a crimson shell that suffocates the unworthy.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
The Green NightmareThe Green Nightmare Viridian JewelLimited to: 1 Radius: LargeGain (6-10)% of Cold Damage as Extra Chaos Damage Passives granting Cold Resistance or all Elemental Resistances in Radius also grant Chance to SuppressSpell Damage at 70% of its valueWe take root in the dirt and strangle those who tread upon it.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Cobalt JewelCobalt JewelPlace into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
.
The Dreamer
The Dreamer
6Chayula ItemA dark note drips 
The Breach
4Breach ItemEver get the feeling you're being watched...?
The Void
1Reach into the Void and claim your prize.
The Blue NightmareThe Blue Nightmare
Compare each legacy variant to the current variant.
Blessing of ChayulaBlessing of ChayulaStack Size: 10Upgrades Chayula's Breachstone to a more powerful versionRight click this item then left click an applicable breachstone item to upgrade it.
to 
The Blue DreamThe Blue Dream
.
The Red NightmareThe Red Nightmare
The Green NightmareThe Green Nightmare