Quick answer: Crude Radiant Heart is found in Mountain of Imprisonment, near The Lady’s Shrine bell, as a reward or pickup in the world. Heavy Attack hits build temporary Remnant Spark that Martial-type Phantom Edges spend first.
Where to find Crude Radiant Heart
- Region: Mountain of Imprisonment
- Nearest bell: The Lady’s Shrine
- How you get it: reward or pickup in the world
Rest at The Lady’s Shrine bell before you go looking. Bells act as fast travel and respawn points, so if you die, you come back close to the accessory. For the exact spot, open the Mountain of Imprisonment interactive map and click the Crude Radiant Heart pin to see its details.
Crude Radiant Heart item card and effect
Crude Radiant Heart is a “Support” accessory. Its card lists this effect:
“Any [Heavy Attack] attack that hits an enemy builds temporary Remnant Spark. Martial-type Phantom Edges consume temporary Remnant Spark first.”
The description below it reads:
“A heart-shaped Mindseal implanted in Lu Sanqian’s chest. More refined than its predecessors, it was designed to preserve the immense power granted by Transcension while minimizing the madness it induces.”
How to polish Crude Radiant Heart
Polishing happens at Jewel. Each level costs Remnant Dust plus one crafting material; the polish lines also add damage.
| Polish | Remnant Dust | Material | Martial Phantom Edge damage |
|---|---|---|---|
| Polish 1 | 48,000 | Tainted Crystal Shard | 3% more |
| Polish 2 | 72,000 | Refined Indigo Crystal | 7% more |
Polish 1
“Any [Heavy Attack] attack that hits an enemy builds temporary Remnant Spark. Martial-type Phantom Edges consume temporary Remnant Spark first and deal 3% more damage.”
This level costs 48,000 Remnant Dust and a Tainted Crystal Shard. Quick Hand Zhang sells the shard for 7,440 Remnant Dust, and you can also track one down in the world using the Tainted Crystal Shard locations.
Polish 2
“Any [Heavy Attack] attack that hits an enemy builds temporary Remnant Spark. Martial-type Phantom Edges consume temporary Remnant Spark first and deal 7% more damage.”
The second level costs 72,000 Remnant Dust and a Refined Indigo Crystal. Quick Hand Zhang sells the crystal for 9,920 Remnant Dust at his Village of Lu, Pangzhen, Meigu Lake and Mirage Estate hideouts. There is also a Refined Indigo Crystal in Mirrorwood Depths in the Crimson Forest.
What Crude Radiant Heart is good for
Crude Radiant Heart turns your Heavy Attack hits into temporary Remnant Spark, and Martial-type Phantom Edges spend that first. In practice, a Martial Phantom Edge becomes available more often. Polishing then adds 3% and later 7% damage to those Martial-type Phantom Edges. For how the resource works, read up on restoring Remnant Spark, and check which skills count as Martial in the weapons and Phantom Edges list.
For Ranged-type Phantom Edges, use Formless Divine Mirror in Pangzhen for the equivalent effect. You start with three accessory slots unlocked; the full Phantom Blade Zero accessories list lists each option alongside its effect and location.
