The biggest risk is that the fast mana it gives would power up combos too much, and while it's probably safest to have Chrome Mox banned, it does seem strange to see it on the banned list after watching Affinity play Mox Opal on Turn 1 and dump literally their entire hand onto the battlefield
There are so many criteria that a best card must pass through, and everyone has their own rubric for calling a card great
Quick view Choose Options $0.49 View Details Avenge Quick view Choose Options $0.99 View Details Close
Its so powerful that if you were allowed to have more than four copies of Manamorphose, you could draw your entire deck
We wouldnt get enough insight into the worlds and characters that make up this amazing game
Many are difficult to play in Commander because they are multi-colored and their effects simply aren't big or flashy enough for the format, and even the Vorthos / flavor / design people I know generally dislike them before of their ample border and very small art