Want some help about some specific items could be looted from Bosses when being given a quest

In regard to WotLK WoW V3.3.5 .

I’ve observed some related World database *_loot_template. And during my creating a new quest i came with a problem: if there’s a way to make it come true that A could be looted from Lich King when I am given a quest called B that needs 50 As?

Any kind-hearted help would be appreciated. Thanks!

The conditions table should be able to do what you need