What can sixth-density entities really do?

[Plenum]

In terms of "power" this means make anything what to desire? Without limits?

getting closer to.  Session 41 speaks a bit more to this:

Ra: Metaphysically, the sun achieves a meaning to fourth through seventh density according to the growing abilities of entities in these densities to grasp the living creation and co-entity, or other-self, nature of this sun body.

Thus by the sixth density the sun may be visited and inhabited by those dwelling in time/space and may even be partially created from moment to moment by the processes of sixth-density entities in their evolution.

41.5 Questioner: In your last statement did you mean that the sixth-density entities are actually creating the manifestation of the sun in their density? Could you explain what you meant by that?

Ra: I am Ra. In this density some entities whose means of reproduction is fusion may choose to perform this portion of experience as part of the beingness of the sun body. Thus you may think of portions of the light that you receive as offspring of the generative expression of sixth-density love.

so there is some direct 'mimicking' of the Creative Function of the Logos by the point of 6d.

The 'creative function' is to 'enable' the full spectrum of potentiation in an expressed output.