Thoughtseize proactively strips their Show and Tell, Aluren, or Force of Will before they can assemble their engine, which is our best angle against a deck that wants to combo off with Aluren and Acererak the Archlich. Dismember can kill an early Aluren-enabled creature threat cheaply while we disrupt their hand. Once Upon a Time and the untap-focused creatures like Quirion Ranger and Wirewood Symbiote provide little value against a combo deck we're racing to disrupt rather than out-value on board. We keep our fast mana creatures to still pressure them with Natural Order or Green Sun's Zenith if disruption alone doesn't close it out.