Affinity Stompy vs Sultai Aluren

Sultai Aluren wants to assemble Aluren plus cheap creatures or Show and Tell into Atraxa/Omniscience, so Tormod's Crypt is a free way to strip their escape/recursion value and can proactively exile the Aluren combo pieces' graveyard follow-up. Harbinger of the Seas turns all their nonbasic lands into Islands, which is a severe mana denial tool against a deck relying on Tropical Island, City of Traitors, and fetches for specific colors, while also being a real body to pressure them. Sink into Stupor is less valuable here since bouncing a resolved Atraxa or Omniscience just delays rather than solves the problem, so trim a couple copies along with the usual narrow one-ofs. Chalice of the Void mainboard already punishes their 0 and 1-mana suite (Lotus Petal, Ponder, Brainstorm) so it stays in.