The subject gains a +2 enhancement bonus to Diplomacy checks. The enhancement bonus increases to +4 at 5th level and +6 (the maximum) at 9th.
Notes: Compare to jump.
10x the duration, 1/5 the effect (doesn't seem like a fair tradeoff,
except that since bonus values in d20 increase in value by squaring
rather than linearly. Something to give a little boost to the diplomat
in the group, or to counteract a character with low Charisma.