So, aside from being a gorgeous holographic card with a sparkling-eyed Gengar popping out at you, it is also an absolute menace
Chaos: Whenever you roll Chaos, create two 1/1 green Elf warrior creature tokens
While not as powerful as Selesnya Charm nor as widely useful as Dimir or Izzet Charms the Rackdos Charm manages to offer a lot of new and highly useful things to Rakdos and gives a lot more reach and potential to the colours as a result
The first category to look at is the most obvious one: spend X mana to cast a card, and when it enters the battlefield, you get Y energy
The aim is to give clear, practical information for collectors, new players, and those that play the game
This is the same energy that the current Alternate Art cards deliver in sets like Battle Styles, Chilling Reign , and Evolving Skies , which is why this style of card has become the most desired type to pull from packs.