Thoridal Achievement on everyone who can equip

[batmanqt]

Thoridal drops -> Random person wins -> Zone out using hearthstone -> you gain the achievement.

So basically, now you have the achievement.. you can now trade the bow to anyone else in the raid by simply

Trading in an instance (say stockades) -> that person zones out -> achievement gained -> rinse repeat

This was available to do quite a while back, however it got fixed. With the recent patch it's now doable again.