Might of Dragonblight/Missing quest item

Guys i asked the gm's a few times for help but since i didn't recieve any i wanted to ask you is there any quests which lead to the Dragonblight zone which i am missing cause i am going for Loremaster of Northrend i have done everything but dragonblight and icecrown i am 128/130 in the dragonblight zone but i am missing a quest which isn't obtainable anymore ( named : A Strange Device) since it drops only during a quest http://wowwiki.wikia.com/wiki/Quest:...Accord_(Horde) and i had no idea i have missed the long questline from the Wyrmrest accord which is an 16 quest chain :) please help