It has been changed multiple times over the years, with cards taken off the Reserved List and subsequently reprinted, thanksin Wizards ' own wordsto overwhelming support from the community, and the foil loophole being closed back in 2010, 14 years after the creation of the Reserved List and reprint policy
Ruby is aggressive and controlling, feeling a little bit like Big Red, whereas Amethyst and Amber do a better job of character-based aggression
Purphoros, Bronze-Blooded is also worth consideration for decks that want haste and more creatures to attack with
Particularly of the pink/purple devils themselves
Other formats seem to ignore this rather expensive creature, which makes its application on the market pretty limited
How many planeswalkers are allowed on a deck