Eternal Solitude
This Craft Essence can be obtained by bringing Attila's Bond Level to 10. It comes at max level with all limit breaks.
彼女はソレを完全には認識できない。 漠然とした予感だけが、サーヴァント・アルテラの胸を騒がせる。
Fan Translation: Confined eternally within the dark prison, the solitude of eternity. However, she is completely incapable to perceive that. Although it may have been just a vague premonition, servant Attila's heart is shaken.