In a moment of interest in flipping through old class abilities, it has become apparent to me that no such database is easily find-able online. So I had to use the Wayback Machine and what-do-ya-know? We still have access to Zam’s EQOA site.
So the ability of the day is Cajole.
It was an alchemist ability that buffed the target’s charisma by 25%. It was a level 20 ability and cost 175 mana to use.