Druid summons got nerf as far as damage though. their life has always been the same, LOW. Dire wolves 5200. spirit wolves 2800. bear 9000. SO any end game boss would 1 shot them. Vs have a necromancer revive skill to tank damage.
EDIT; No the strongest part of the elemental druid is Tornado.
If you mean the strongest survivability of the Druid then yes, Revives.