While ordinary attacks don't cost FP, skills and abilities that form the basis of your build in Elden Ring are voracious for them, and Assassin's Cerulean Dagger is a great way to improve the situation. Using this strangely shaped talisman, you will recover 15 FP during each critical attack. It is an incredibly generous offer, since you can quickly restore your combat power during the fight with a few good hits. And since this effect can trigger twice for some weapons, this talisman is truly worth your attention.