So this SCP consists of a bow and an arrow.
The anomalous property only occurs when somebody in 100 yard range say a sentence contains the words I, adventurer and you.The bow will immediately shoot out the arrow once the word you is said. Humans are not needed in this process but if there are human instances nearby, they will shoot out the arrow, presumablely being controlled by the SCP because the arrow will not move like any normal arrow.
It will go straight after the vicitim's knee, and nothing can stop the arrow from getting to the victim's knee. The foundation had tested it with D personel in solid concrete cell but the arrow still break the barrier and get to the knee.
It will cause extreme pain to whoever says those words but it will not cause death. despite that, it is just an ordinary bow.