Black-Green: Graveyard In Aetherdrift, as in most Limited formats, black-green thrives on the graveyard
However, if you really want to make things difficult for yourself, you can access that same account-based process from within the MTG Arena mobile client
Radagast, Wizard of Wilds Radagast, Wizard of Wilds wants us to cast spells with mana value 5 or greater so that we can create beasts and birds with ward
Try a Ruby Medallion to keep your red spells cheap, and use Koth, Fire of Resistance to dig up Mountains and keep the spells coming
Unless you are getting ready to die and desperately need a blocker, you will wait until you can protect it from whatever shenanigans your opponent has devised for your finisher
See my best card draw lists for the other colors blue, green, red, colorless, and white