The plane of Dominaria was the birthplace of the shadow mechanic, so maybe well see shadow again on a return visit, but its a fairly small possibility because R&D avoids putting parasitic mechanics (i.e., mechanics that only work with themselves) in modern sets
The deck also has Rush attacks to keep the aggression going, to ensure the opponent doesnt get the time to breathe.
You will also get to choose your starter deck
If the conditions are met, both of these lands can be tapped and pay 3 generic mana to draw a card
Of course, you can also sink real money into the game too, to unlock specific sets or cards, as well as a premium battle pass - which provides more quests and unlockables - and to purchase accessories for your virtual trainer, from deck boxes and card sleeves to virtual clothing.
Unlike the others (Junk, USA, BUG and RUG) which have widely accepted names, there is little consensus for the W/B/R wedge