By Drinking this Essence you become The Bard yes The Bard bane of DnD campaigns and common sense the multiverse over.
*Aside from the normal abilities gained from being a Bard (DnD or any other fantasy setting, your choice) you gain a number of other powers.
*A subtle anti-fate effect that derails the plans of anything you wish, often in humorous or bizarre ways.
*Charisma the likes of which even inanimate objects or gods will do whatever you wish.
*Good Looks that border on supernatural for your species.
*The ability to somehow always get out of problems or crimes you committed despite all odds.
*And of course a increased affinity to the Bard class/role/job beyond all but the most powerful or skilled of Bards.