After now running a total of 30 bgs as Holy priest I can confirm this ability is broken.
Greater Fade ability says:
Fade out, removing all threat, increasing your movement speed by 50% and causing most melee, ranged and spells to miss you. Lasts 4 sec or until you take a hostile action.
Only problem there is no mele, ranged or caster interrupt that will miss while this ability is active.
Fix this
That aside what in the world is ‘most’ ?