Psychic Energy My personal favourite especially as Ive used and fine tuned a not-at-all tournament legal Deoxys deck with Nidoking and Nidoqueen support, which is on its latest iteration after having first been built close to twenty years ago of all the basic Energy types is Psychic Energy
Theres nothing stopping you from using both and unlocking each deck on one MTG Arena account though
Of course card draw is not always the regular card draw everyone has in mind, where you put a number of cards from your library into your hand, but appears in other forms or abilities the most common of which are: Impulse draw: Exiling cards from the top of the library to cast them for a limited time period
In MTG, it has been around a lot less time, since 2018, and Ive always thought it weird that a term for spycraft is used to talk about manipulating your own deck
Red and black get access to a lot of mana acceleration (one-time ramp), and blues ability to lean on artifacts for support, along with occasional odd card designs, helps it get by