CodexWarframe database
Primary Arcane

Primary Crux

Rank effects

Rank 0On Weak Point Hit: Gain +5% Status Chance and +1% Ammo Efficiency for 10s. Stacks up to 10x.
Rank 1On Weak Point Hit: Gain +10% Status Chance and +2% Ammo Efficiency for 10s. Stacks up to 10x.
Rank 2On Weak Point Hit: Gain +15% Status Chance and +3% Ammo Efficiency for 10s. Stacks up to 10x.
Rank 3On Weak Point Hit: Gain +20% Status Chance and +4% Ammo Efficiency for 10s. Stacks up to 10x.
Rank 4On Weak Point Hit: Gain +25% Status Chance and +5% Ammo Efficiency for 10s. Stacks up to 10x.
Rank 5On Weak Point Hit: Gain +30% Status Chance and +6% Ammo Efficiency for 10s. Stacks up to 10x.

Drop locations

SourceRarityChance
H-09 ApexUncommon12.5 %
H-09 Efervon TankUncommon12.5 %
Höllvania/Antivirus Bounty (Caches)Uncommon12.5 %
Höllvania/Exterminate: Scaldra (Caches)Uncommon12.5 %
Höllvania/Exterminate: Techrot (Caches)Uncommon12.5 %
Scaldra ScreamerUncommon12.5 %

History · 3

Lines from the official update notes that mention this entry.

    • FixedFixed Primary Crux not counting multishot projectiles for Clients on the first weakpoint hit.
    • FixedAlso fixed elemental ammo (ex: from Cyte-09’s Resupply or Oraxia’s Silken Stride) causing Primary Crux to trigger multiple times off of one projectile.
    • ChangedAdded Primary Crux, Secondary Enervate, and Melee Doughty to the Höllvania Arcane Collection in Loid’s Arcane Dissolution vendor.
    • ChangedPrimary Crux