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...
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Best Craft Essence: Craft Essence Tier List
FGO Reroll Tier List [5/11 updated!]
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