Lets say you are under the effect of Invisibility.
An invisible creature is impossible to see without the aid of magic or a special sense. For the purpose of hiding, the creature is heavily obscured. The creature's location can be detected by any noise it makes or any tracks it leaves.
And you are wearing the Boots of Elvenkind
While you wear these boots, your steps make no sound, regardless of the surface you are moving across. You also have advantage on Dexterity (Stealth) checks that rely on moving silently.
Now your groups ranger or druid casts Pass Without Trace on you.
[...] can’t be tracked except by magical means. A creature that receives this bonus leaves behind no tracks or other traces of its passage.
I know that when you are Invisible and you did not hide, you are still detectable because of the noise and the track you leave behind. But the Boots of Elvenkind and Pass Without Trace take care of that. So:
- Are you still required to take the hide action in this situation if you don't want enemies to know your location/presence?
- If so, why? What gives away your location?
- If not and you are under the effect of greater Invisibility do you get the benefits of "Unseen Attackers and Targets" for every attack you make when you move between attacks? (You would give away your location, but are not detectable, so completely hidden again when you move)