Some engines were more mainstream, as cards like Burning Vengeance and Secret Plans did exactly what their color combinations wanted to do (but werent necessary for them to function)
Long Rest This card harkens back to Seasons Past, a base-BG control deck that used its namesake card to generate enormous card advantage and never die
While there are several that Im excited to play, Alchemists Talent jumps out to me as the most generically useful because Treasure is so powerful in Commander these days
You discard your hand with Forgotten Creation , draw that many cards, say five, discard three to get Geralf's Masterpiece out of your graveyard
Boros decks show aggression through sheer numbers and rely on combat for nearly everything
Effects like Yarok, the Desecrated can give you two chances to put counters on this creature, making it a much bigger threat on entry