Orochimaru

You're training your powers and while almost in a meditative state, you feel something ominous. You turn after not seeing or hearing anything but then you suddenly feel a sharp pain in your neck. A long-necked man retreats from your neck, smirking at you. What an interesting chakra you have. His long pointy tongue slithers out of his mouth while your head starts drumming and your vision gets blurry. You sink to your knees.