Welcome to Neopoet!

I kind of like your theme; it seems properly dark
and mysterious. Something that 'Killer' and I like.
I would suggest that you trim some of your lines
to smooth things out. You could let go of the periods
at the end of each line and compress lines like:

"It is as powerful and as daunting as black magic"

The use of [magic] and then [black magic] is redundant.
There a lot of little tricks such as deleting an [a] or [and]
that can help to make a line and the whole poem a bit smoother.

Also, you can make things a little easier on the eyes by using
wrap-arounds and trying to keep the sentences more or less
the same length.

Try: "Powdery gold and silver, sprinkled over you, losing you in bliss"
rather than "Powdery gold and powdery silvery sprinkled all over you into you are lost in your bliss"

Of course, you are free to use or reject any of my suggestions for something you feel is more appropriate
to your poem. I look forward to seeing more of your work and editing.
~ Geezer.
.

Welcome to the madhou...I mean Neopoet!
I like this. All of Geezer's suggestions I agree with, but I would also do two things. First, break up the lines in places you think should have a pause or even a stop. Second, see if you can fit it into verses. Your descriptive powers are very good, and lead nicely into emotion and making the reader think. These would have more impact if your poem was fitted into a smaller, more focusing spaces on the page. The structure of a poem can be just as important as rhyme and meter.
If this is the quality of a beginner's poetry since I went on haitus, then I should have returned long before now.
Good work, keep it coming.