Sultai Aluren wins via Show and Tell into Omniscience/Atraxa or the Aluren enchantment enabling free creature casting. While Containment Priest does not shut off Aluren (since creatures cast with Aluren are still cast), it exiles creature threats like Atraxa put onto the battlefield by Show and Tell instead of cast. Consign to Memory can counter Acererak the Archlich's triggered ability or any other triggered ability, giving you a way to interact with their value engines at instant speed for one mana. Stifle is too narrow against their gameplan, and Erode's land-search downside is irrelevant but Swords to Plowshares already covers their creature threats efficiently, so trim both for more proactive disruption. Keep Force of Will and Force of Negation maxed to fight through Veil of Summer turns and disrupt Show and Tell.