Darkdrift skill
Darkdrift's named skill is described as piercing shields, with less damage when used without FP.
How it works
The skill table lists Darkdrift as a skill on Darkdrift and describes its effect as piercing shields. Its without-FP entry says less damage. The general overview says skills use FP and may still be performed without the requisite points, but lose enhanced properties; the source does not give a numeric shield bypass amount or weapon damage value.
Read the supporting references
Source-bounded reference to reinforcement, gem infusions, weapon skills, and boss-soul transposition described in the supplied Dark Souls III passages. It records documented effects and restrictions, not comparative effectiveness. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.