Skill Up & Ascension MaterialOminous bones wielding curses.
Fuyuki: Unknown Coordinate X-C is the best AP-saving location to farm Evil Bone. You'll get around 2x Evil Bone by spending 40 AP.
Fuyuki: Unknown Coordinate X-C is the best time-saving location to farm Evil Bone. You'll get around 6x Evil Bone by spending 150 AP.
Here is a list of servants that need Evil Bone to perform Ascension and Skill Up.
Rashoumon event (Ibaraki Douji event)
Murder at the Kogetsukan
Inheritance of Glory
5 Star Servants Tier List: Best Servants [5/9 updated!]
Saint Quartz Farming Guide
FGO Reroll Tier List [5/11 updated!]
Best Craft Essence: Craft Essence Tier List
How to unlock/maxing Irisviel (FGO Fate/Accel Zero Order event)
How to farm EXP cards & level fast
How to build an Arts team
Chloe Von Einzbern
Altria Pendragon (Santa Alter)
Tamamo no Mae