In my Xantcha, Sleeper Agent politics deck, I love cards like Descent into Avernus and Rite of the Raging Storm that actually give my opponents more resources
Its very important to be able to interact with your opponents big threats and key cards
Three colors Control decks usually have at least two colors, sometimes three
In big-creature decks that can't prevent wraths (An Offer You Can't Refuse) or make all your creatures resist them (Heroic Intervention/Dawn's Truce), I am a big fan of mass-reanimation effects like Haunting Voyage, Rise of the Dark Realms, Behold the Sinister Six!, and Bloodline Bidding
Its a Threaten effect with flying and haste that has the option to kill a smaller creature
We've heard a ton of feedback about the system