Tools of Incomprehensible Experimentation
Dropped by Lihuvim – Sepulcher of the First Ones
Lihuvim, Principal Architect is the sixth boss of the Sepulcher of the First Ones raid.
Not LFR
Can drop from Olea Cache Purchasable from Olea Manu for 700 Cyphers of the First Ones
To unlock Olea Manu you need to learn the Cypher Console spell Altonian Understanding & complete the questline that will appear – Jiro to Hero Questline
Outside Exile’s Hollow (not in the cave)
None the Wiser Guild 