Core Keeper

This guide is in two part first how to find it in your world then a seed whit every coordonate for every part.

Phamtom spark is an legendary item bow the best range weapon in the game and it have infinit unse and doesnt need to be repair.

First you need to kill ghorm the devorer and use it's mysterious idol to make the pnj Cloaked merchant come in your base. Then you need to buy him an "empty crystal" and keep it for later.

Then you need to ind three Metropolis a sub biomes in the suken sea and you need to find a specifique room inside name the "Broken core room". Their is three room in three separeted structure so you need to find this room inside three metropolis. When you find this room talk to the middle core (it's the same from 0 0 coordonated but broken) inside will be one of three part. One will be "the shutdown protocole" one will be "anomaly report" and the last one will be "overwrite transcript". But dont leave yet in all of this three room their is also a chest contaning thre other part that you need. You can find in this chest "the fractured limb" or "energy string" or "channeling gemstone". Some time the nnemys will destroy the chest and leave the item on the floor so if dont see a chest dont panick and light the room to find it.

So to resumate here find a metropolis look for a destroyed core room and loot the chest you will have three bleu cards and three parts of the bow. Now that you have all of this use your ampty crystal whit all of this in your inventory to make an "adminkey".

Now that you have the admin key you need to find the room who contain the recipe for the bow. This room can only be open whit the adminkey. This room is 10x10 and is pretty easy to miss but should generate around 500 tiles from your core. When you check for this room go from 484 to 516 and do some up and down around this coordonate along the sunken sea biome.

When you find it use the recipe inside the room whit all three part of the bow find in the chest previously and the bow should be yours.

Now if you dont want to find like an idiot a tiny room in a 2000 square zone you can use my seed and coordonate here:

You need to put the exact seed and setting or the random generation will be to wild for you to follow my coordonate.

seed : 945191294811

setting of the map : easy ,
biome chaos : normal
ore density : extreme
tunnels : off
chamber : extremes
rivers : off
lakes : off
pits : off
celling holl : extreme

the three room for the bow part and blue cards for the admin :

first room : 494 , 260 you should find one chest to the top right
second room : 752 , 240 the chest is on the left of the room
last room 745 23 the chest is on the right of the room

Chamber for the recipe : 276 415

Good luck!