Currently no disciplines are available for Rangers when /disc is done in-game. I don't recall if hybrid disciplines were added with Kunark or Velious or in between sometime. I've been searching with the waybacktimemachine, but haven't found anything solid.
Evidence: (Help find some!)
Storm Strength (53) and Chloroplast (55) are currently not able to be scribed as they show a lvl requirement of 255.
Evidence:
http://replay.waybackmachine.org/200...spells/ranger/
Jolt is not in game yet, but should be implemented in the near future. It was in game by at least June 29, 2000.
Evidence:
http://www.tski.co.jp/baldio/patch/20000629.html
Would appreciate a response from one of the devs on these issues. Even a simple "screw you newb you deserve nothing you pathetic ranger." would suffice.