Duration: (level)/5 in nature Cumulative: No As you know power of nature is great. Druids are nature servants and nature likes them. So he could give a bit of a power boost to Druid and his friends. It simply means that slightly increases attack abilities of your group. When you leave nature, force of nature fades. Note that this spell has nothing to do with spell "summon force of nature".

See also: protection of nature, summon force of nature