EliteCabal
Item

Blue CoreN

Quest Item · option 1283 · 1×1 slots

Careful: item 491 exists under other options too, and they are different things. Blue CoreN (option 1398)

Best place to farm

Killian Grausten in Frozen Tower of Undead

A per-species drop, rolled independently on each kill.

100% almost every kill
Show these spawns on the map

Drops · 1 source

Rates are what you experience: the server's drop multiplier is 1x.

From Where Rate
Killian Grausten level 145 · 279,498 HP Frozen Tower of Undead level 80-145 this monster 100% almost every kill