Gonna need more context for this. Something like: "Additional function: One at the first level, Dark Picture Woodedge." More information will help others understand what's being written here.
Just to reiterate, that translation may not be accurate since I can't tell what's happening in the scene. Be aware that you'll need to revise what I wrote to fit what you understand to be the context of the scene.
If the novel you are translating is xianxia or xuanhuan , this phase can be translated like this: Additional function: a Tao's technique of the first boundary, Dark Drawing Wood Blade. I'm not sure of the accuracy of the skill name "玄图木刃" translation. You should re-check the skill description, then translate this again.