Rakdos Delirium builds a graveyard-fueled board with Nethergoyf, Moonshadow, and Stitcher's Supplier, so Brotherhood's End's 3-damage-to-all-creatures mode is strong against their small, delirium-boosted threats. The deck also has aggressive discard (Thoughtseize) and burn (Lightning Bolt), so an extra Grapeshot helps close games fast before they strip your hand or kill Ral, Monsoon Mage. Artist's Talent is too slow against their efficient curve, and Flashback is a lower priority since it's card-disadvantage neutral rather than immediately impactful. Watch for Flare of Malice forcing you to sacrifice your best creature/planeswalker and try to race before their graveyard engines take over.