Dimir Hogaak lives and dies by its graveyard. Hogaak, Arisen Necropolis needs graveyard fuel for delve and can be recast from the yard, Moonshadow needs cards hitting the graveyard to shed counters, and Stitcher's Supplier mills into all of it, so Leyline of the Void, ideally free in the opener, shuts off their entire payoff plan. Yorion, Sky Nomad, if we have it available as a companion, adds a resilient flying body that dodges their removal suite and rebuys our enter-the-battlefield value creatures like Skyclave Apparition and Solitude against their Daze/Force of Will-heavy disruption. We trim a couple of the weaker pieces that don't interact with their graveyard plan as directly. Keep Thoughtseize and Wasteland in to fight their disruption and punish their fetch-heavy, nonbasic-heavy manabase, since nearly every land they play (fetches, duals, Dryad Arbor) is a legal Wasteland target.