Fatal Push answers Nethergoyf, Moonshadow (once it's shrunk with -1/-1 counters removed, mana value 2 or less, or 4 or less with Revolt), and Detective's Phoenix cheaply and efficiently. Soulless Jailer is strong against their graveyard-centric plan, shutting down permanent cards entering from graveyards (Stitcher's Supplier, Street Wraith recursion, bestowed Detective's Phoenix) and stopping noncreature spells cast from graveyard escape like Nethergoyf. We trim our own slower graveyard-value pieces since Dredger's Insight and our own graveyard matter less in a race against their aggressive discard/removal plan, and keep Yawgmoth plus Agatha's Soul Cauldron as our proactive engine.