Had a short dream before waking up.

I come into possession of a ring that was very plain in style with a gold band and red gem that was a smooth dome shape.
There was this compulsion to wear it when I found it, but nothing bad happened after putting it on.
I quickly realized that it was magical in nature, it not only allowed me to detect sources of magic with a pink highlight but
to also absorb magic from items like books or potions etc by touching the ring to them, after which the gem
set in the ring would glow as it grew slightly with each source of magic absorbed into it.
After a while I started actively wanting to find more magical things to drain, like the compulsion to wear it.
While walking past some people in the street they just stared at the ring like were also being compelled by it, so I hurried off.
It seemed to only be if they looked at it, so if my hand was in my pocket or something then it was fine.
At one point I was in a library or shop or otherwise room with someone talking about the ring, they left to get something
and I started looking around the room feeling the urge to drain some of the magic books they had, fighting the feeling it was wrong.
It was especially tempting since I and the other person had realized the wearer could then use the spells the ring absorbed.
They came back before I could convince myself to do it, there was this awkward air before I was woken up by a loud ass car horn outside.

Ended talking with my brother who DM's for me and a friend (D&D) about how it'd make for an interesting magic item in a game.