Some proxies are simple slips of paper added to a sleeve with a regular Magic card, but you can also order card-like proxies from companies with printing facilitates that allow them to print on paper that resembles genuine playing cards
Legality depends on the tournament format -- Mayhem Devil can be legal in some formats and banned or restricted in others
Sample Lists EE is a pretty versatile deck, so here are some sample lists courtesy of the Evil Eye Discord to get you started
All Fairy-type Pokemon can still be played, although as we already mentioned, they are available in the form of other card types, particularly those that use Psychic energy
There are some cards that I could see coming off this section, especially if the Commander bracket system continues to help WotC make adjustments
In September 2020, a Mox Sapphire Beta Edition went for $12,100