Threefold barrier is a limited CE only available in Kara no Kyoukai (The Garden of Sinners) event.
For the duration of "Kara no Kyoukai (The Garden of Sinners) event", this craft essence gains additional effects.
Work in progress...
Rashoumon event (Ibaraki Douji event)
Murder at the Kogetsukan
Inheritance of Glory
How to farm EXP cards & level fast
FGO Reroll Tier List [5/11 updated!]
Best Craft Essence: Craft Essence Tier List
Device Transfer Guide
5 Star Servants Tier List: Best Servants [5/9 updated!]
Best Servants [★4]: 4 Star Tier List
Altria Pendragon (Lancer Alter)