BR Graveyard is similarly structured to Rakdos Delirium with Thoughtseize, Lightning Bolt, and Nethergoyf/Moonshadow as graveyard-scaling threats, so stripping their disruption or key threats with your own Thoughtseize helps you resolve your engine first. Witherbloom Charm offers flexible answers: killing a cheap early creature, drawing cards off a Food sacrifice, or gaining 5 life against their burn-heavy removal suite. Young Wolf is too fragile against their dense removal package (Lightning Bolt, Flare of Malice) to be reliably good value. Keep the rest of your engine intact since this is primarily a race to assemble value before they stabilize with Dark Matter Manipulator-fueled threats.