Negris already doesn't remember whether this counts as Third Rank or Fourth Rank. Previously, there was a Dragon God Transformation that extended Ange's transformation time to infinity, but that was just a quantitative change rather than a qualitative change, so it shouldn't be defined by 'Rank'.
Yet regardless of whether this is Third Rank or Fourth Rank, it cannot compare to the shock of the scene Ange has created, four specters, all are Ange's strongest power sources: Little Ghost, Kram, Gray Divine Star, and Ange's body, all present.
The further the distance of the power projection, the greater the loss, but Ange has a Tree of Ten Thousand Realms; it's a Divine Tree supporting all worlds, and its power can be transmitted with minimal loss onto Ange's body.
Gathering the four major power sources, Ange entered a new stage of Dragon God Transformation, a stage that had never appeared before. Yet Negris realized it had already seen this form.
