devour cards mtg Rules Text: Devour, Subtype: Dragon, 5 Target player sacrifices a creature What Magic: The Gathering cards

That's one use - cycling and then tapping this like a mana rock

I'm not seeing it

In addition, the green dot has to be surrounded by a saturated black circle

Even without that, a 7/4 indestructible (who gives himself menace) for two generic, one red, and one white can be a terrifying piece on the battlefield

There are so many options it is virtually impossible for artificial intelligence to make accurate predictions.

Its cliche to say that some version of something is more of an art than a science, so let me leave you with this: where trading in regular cards is primarily about correctly assessing a cards playability now and in the foreseeable future, oddities trading is much more about knowing your local market, building good negotiation skills, understanding what your trade partners want, and building an inventory that is consistently in demand