BR Grave shares the same small-creature shell as Rakdos Delirium, and Brotherhood's End sweeps Stitcher's Supplier, Nethergoyf, Dark Matter Manipulator, and Fear of Missing Out for 3 damage before they stabilize. Thoughtseize is their main way to interact with our hand, so we're relying on redundancy and speed rather than any direct counter-measure. Artist's Talent is cut since it doesn't impact the board and is too slow against their proactive clock. The rest of the ritual/storm package stays intact to maximize our racing potential.