Minstrel suggestion

I had an idea for a defensive skill. Called Lyrical Mist. The Minstrel plays a quick tune to cause attackers to suffer a debuff that causes a high miss chance. It would have a 30 minute cooldown so it's not abused , and could also have a stun effect, or Agro break obtained by leveling a deed etc.. For balance, it could be setup so as you level it adds targets. It would start with 3 and by 65 maybe be up to 6. This could really be handy imho when groups cannot protect the Minstrel. Even with high threat reduction, etc.. We still get mobbed and overrun, if still as death is on cooldown, running and eventually dieing is all we can really do. Especially if we are full heal and not able to fight them off.

The neat part about this skill is it would emit a mist or fog cloud. It would have a range of say 5m or so. And be an Oh S... button.

Thoughts?