Talk:Palingenesis/@comment-37070100-20181203020136/@comment-27365991-20181225111459

If you want to be efficient, just grail the 3 or 4 star servants you like/use to lv 90. At least that way, you'll be getting 5 levels per grail instead of 2 levels, when you grail past lv 90. Grails are also a bit more useful on servants with NP's that do damage. For someone like Tamamo or Jeanne, the extra points in the attack stat only affect the damage of command cards. Other than that, just grail whichever servants you like the most, whether its based on looks, personality, involvement in the story, or gameplay value.

Personally I like to grail servants that are related to one another in some way like a servant and its alter/summer/christmas version. (ex. all the Elizabeths, all the Jalter variations (avenger, santa lily, summer berserker), the goddess alliance, Edison and Tesla, Karna and Arjuna, and etc.)