ninety9rising

i have been tinkering with the creation kit recently (albiet with little succes) and I have an idea for a sword. i want it to be classified as a soulgem AND a weapon. everytime i kill something with it i want it to absorb the soul, becoming more powerful with everything that i kill with it. question #1 is it possible question #2 if it is, then are there any modders willing to tell me how to do this or do it themselves?