lol, sable, yes. A _lot_ of people have fond memories of those angry druids (August and Ian themselves commented upon it in their author blurbs). All I can say is that it was probably part of either druid only magik/magikal item, or some right handed magik artefact. (say, a right handed magik spell staff). We will have to wait until both the darklands, and mOm are released to find out for sure (if the gooses put it in that is.)
Again, until then, I would give an adept a brotherhood wand (shaped like a staff, only with a wands power) with the spell lightning hand in it. (tier I). More powerful evil druids might get spellstaffs with LH at all tiers. If a player of yours wants the item after killing the druid, and you don't want him to have it, simply say its a righthanded magik item, and that his char can't use it.
Eryx: I would think so; if you found the spells/elder arts in the rulebook useful, you probably find the stuff in the supp useful too.