As a crypto enthusiast and investor, if you haven't come across the underpriced Jewel Magnatum $MGT then you haven't been doing your research well. I was blown away by its white paper. It seemed inactive or so for sometime now but the devs are back at work as seen on their Telegram channel t.me/magnatum_io & the coin is mineable.

The project looks a promising one to key into. My honest view.

NB: this is not an investment advice, do your due diligence before putting your money on any coin.