Blue had flyers, which couldn't block shadow creatures, and green and red had non-shadow creatures which couldn't block shadow creatures or flyers
Formerly a competitive Pokmon TCG grinder, she has been playing Magic since Shadows Over Innistrad, which in her opinion, was a great set to start with
Bria, Riptide Rogue and Adrix and Nev, Twincasters are two commanders that leverage these effects well as they apply loads of pressure with their wide board states
You can just play games in Open Dueling at your own leisure
Black White Rare (BWR): A niche rarity that appeared in Black Bolt [SV11B] and White Flare [SV11W]
The main line of play is simple but powerful: develop ink early with Sapphire, then drop mid-to-late-game glimmers that generate Lore more efficiently