This question looks to explore the relative priority of wording.
Dead Rat Deserter is a character theme which allows a character to transform into a tiny rat. This rat cannot make attacks as per the power:
While in rat form, you cannot attack. You retain your game statistics, but gain a climb speed equal to half your normal speed, and a +4 bonus to Stealth checks. Your equipment becomes part of your rat form, and you drop any other items you are holding. You continue to gain the benefits of the equipment you wear, except shields and item powers. While equipment is part of your rat form, it cannot be removed, and anything in a container that is part of your rat form is inaccessible.
Shaped consciousness, however:
You can see, hear, and use psion powers as if you were in your fragment’s space.
Does the positive "you can use powers" from the fragment override the negative "you cannot make attacks in rat form?"
Does it make a difference from which form you invoke the fragment?