User blog comment:LastationLover5000/Putting a Stop to Dragon Slayer Foolishness/@comment-5004454-20121011183947

I don't mean to rain on anyone's parade or anything, but Sky DS isn't technically a consumable DS, since air doesn't have a form in itself.

And sound could work (IF we follow up on the theory that Sky DS isn't consumable). Nowie, I just thought of what could have been your Rumble DS. Maybe the user can eat only one sound (or only sound under one frequency) at a time. And instead of sense of smell, the user can have a sense of hearing.

Stars and cosmic could also work, but here it's a bit more complicated. I don't exactly know how to make it happen, but then again I don't exactly care. However, here's a hint that could help. Heavenly Body Magic.

Now, Uranometria is not classified as Light Magic.

Moon DS could work by eating the rays of the moon. That would make it usable only during night. So could Star DS (though not exaclty the same way as MDS, since stars don't exibit rays).

It can work, people just need to have some form of imagination.

Though that's just my opinion.