Blue doesn't usually have a ton, but there are a few cards like Cloud of Faeries and Peregrine Drake that can go a long way with the help of mana doublers or Ravnica bounce lands
Necropotence Necropotence is one of MTGs best draw options, with a slight catch, as befitting black mana
The December preview gave us a pretty good idea of what to expect for this collaboration
Synergy Sustained This whole deck is built to trigger Jori En, Ruin Diver as often as I can
Because all the cards in a color can be cast using that same type of land, they are vastly more likely to appear in the same decks, leading to consistent, recognizable play styles across decks which play that color
Early meta share projections hit 15-20% in ground-heavy decks countering Dragapult