This craft essence is currently unavailable on the EN ver.Seaside Luxury is can be purchased from Dead Heat Summer Race! event shop.
Here is a list of servants & CEs that can be obtained for the duration of the Summer 2017 event part 1: Dead Heat Summer Race and part 2: Death Jail Summer Escape.
Saber Wars: The Caliburn Awakens Rerun JP 2018
5th Singularity: E Pluribus Unum
From Mar 15 ~
5 Star Servants Tier List: Best Servants [5★]
Best Servants [★4]: 4 Star Tier List
FGO Reroll Tier List
1-3 Star Servants Tier List
Jeanne d’Arc (Alter)
Cu Chulainn (Alter, Berserker)
Altria Pendragon (Lancer Alter)
Black Holy Grail (The Black Grail)
School of Chaldea