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
Strength of Nature was a later-added spell in an expansion we probably won't get to, seeing as where the spell is available on Allakhazam but the earliest Lucy entry is 2002. Here's the spells rangers currently get:
http://members.fortunecity.com/kilolin/id30.htm
Their non-existence isn't a mistake
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