Playing an elemental druid single player and keep energy at 20 sounds difficult to say the least (you won't find THAT many charms, and you'll need charms in order to boost your mana). Another problem with an elemental druid single player, is that the skills you want are both lvl 30 (armageddon and hurricane) (so you'll have to rely on melee and lvl 1 spells until then, which is NOT easy).
But if you'd single minded want to go for an elemental druid, I suggest getting energy (and if you are playing single player, you can't go for exclusivlly Hurricane or Armageddon due to imunities).
If you really want to build a druid, I'd suggest going for a wolf druid. Get Wolf Form (durp), some Lycantropy and fury. This will make you a quite forminable fighter. Add Oak Sage of Heart of the Wolverine for increased abilities (just one level gives a nice and cheap bonus). You could allso add some points into Carrion Vine.
Another fun combo could be to add Armageddon, sice you can cast that while in wolf form <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />.
Übereil
