The level 86 spell Propitiate is now available for up to level 90 mobs IIRC. It can be resisted but not cause agro. It also can wear off rather suddenly like in one second. You have to watch for the worn off spell before pulling or you will pull multiples. Mollify is the next at 91.
The lack of a pacify line for so long until 86 is something I would hope they rectify.