If you are tanking the drakes on Halfus you are able to avoid melee attacks from them completely. Just walk backwards slowly when you have aggro on it. Be careful not to move the drake as it only takes a couple yards and you should be in a sweet spot to bug out the drake and he will be unable to melee you. Extremely useful if attempting heroic Halfus. Have done this myself today when attempting 10 man heroic Halfus so can confirm that it works.