You've heard that Summoner Noctisse is currently researching the power of Spectral Master. She is in Aden Castle Town. First, go to her and ask for her help.

Summoner Noctisse has asked you to find and bring back the cure to treat Fairen's poison. Go meet Magister Kamilen in the Town of Goddard and ask her to make the medicine for you.

Magister Kamilen said that in order to cure the fever, she'll need an Ice Crystal from the Hot Springs area. If you meet Chef Jeremy there, he'll provide you with the details.

Take the cure for fever to Summoner Noctisse in the Town of Goddard.

You've discovered the location of the first Tablet of Vision that contains the sacred knowledge you need to become a Spectral Master. Take the Resonance Amulet to the Tablet of Vision and obtain the knowledge!

You've communed with the first Tablet of Vision and also found the second Resonance Amulet! Slay the Guardians of Forbidden Knowledge and obtain the Resonance Amulet!

You've obtained the second Resonance Amulet! Now, try communing with the Tablet of Vision.

To become a Spectral Master, a Phantom Summoner must receive the visions of six stone tablets.

You've obtained the third Resonance Amulet. Now, try to commune with the Tablet of Vision.

You've communed with the third Tablet of Vision! Now you must know where the fourth Resonance Amulet is located. Go there.

In order to obtain the fourth Resonance Amulet, you must first obtain the Divine Stone of Wisdom which is currently possessed by the Ketra Orcs' Chief Shaman. First, meet with the Ketra Orcs' Messenger and form an alliance with them. Once you earn the trust of Ketra Orcs, you'll be able to obtain their Divine Stone of Wisdom.

In order to obtain the fourth Resonance Amulet, you must first obtain the Divine Stone of Wisdom which is currently possessed by the Varka Silenos' Chief Shaman. First, meet with the Varka Silenos' Messenger and form an alliance with them. Once you earn the trust of the Varka Silenos, you'll be able to obtain their Divine Stone of Wisdom.

You've obtained the Resonance Amulet! Now, go to the fourth Tablet of Vision and attempt to commune with it.

It appears that Summoner Noctisse has the fifth Resonance Amulet. Go meet with her.

The fifth Resonance Amulet is currently owned by the Archon of Halisha. In order to find that evil creature, you must either enter the Four Sepulchers in the deepest part of the Imperial Tomb or go to the Shrine of Loyalty in the northeastern part of the Wall of Argos and start killing his minions there. Either way, you must kill the Archon of Halisha and obtain the Resonance Amulet.

Monsters to Hunt -
Shrine of Loyalty: Grave Scarabs, Scavenger Scarabs, Grave Ants, Scavenger Ants, Shrine Knights, Shrine Guards and the Archon of Halisha
Imperial Tomb: the Archon of Halisha

You've obtained the fifth Resonance Amulet! Now, go to the Tablet of Vision and try communing with it.

The sixth Resonance Amulet seems to be located near the last Tablet of Vision. However, someone seems to have already gotten a hold of it. Hurry to the last Tablet of Vision!

Finally, you've obtained the sixth Resonance Amulet! Now try communing with the last Tablet of Vision.

You've completed communing with the last Tablet of Vision. You've acquired all the sacred knowledge you need to become a Spectral Master. Return to Grand Magister Fairen in the Ivory Tower.

By communing with the last Tablet of Vision, you've acquired all the sacred knowledge you need to possess to become a Spectral Master. However, since your level is lower than 76, you can't transfer to that class yet. After you raise your level, go meet with Grand Magister Fairen at the Ivory Tower.