According to the wiki at
http://wiki.project1999.com/Coldain_...istguard_Quest you need to hand in Gem of Persuasion to Frost Giant Wolf Tamer in Kael. This should give a Giant's version of Gem of Persuasion, which can then be handed back to him for a giant's version of harness of control. He just ate it. This was on 8/8/2015 at roughly 5 pm CST.
Allakhazam link:
http://everquest.allakhazam.com/db/q...tml?quest=1218