Aven Mindcensorhate$0.60Disrupts tutoring and fetches by severely limiting library searches, serving a similar anti-search role in white-blue style. It is a creature instead of an artifact, but it fills the same gameplay niche against fetch lands and tutors.
Opposition Agenthate$26.52Also punishes searching libraries and can turn opponents' searches into card advantage for you. It is more powerful and flash-based, but functions as a premium anti-tutor hate piece.
Strangleholdhate$5.64Prevents opponents from searching libraries and also stops extra turns, making it a broader hate piece in the same functional space. It costs more and adds red, but is one of the closest direct analogs.
Archivist of Oghmautility$8.44Not a hard lock, but it rewards you when opponents search libraries, making it an effective soft-answer to fetches and tutors. It provides similar punishment while generating card advantage.
Leonin ArbiterhateBudget$0.30Taxes library searches unless opponents pay additional mana, which strongly interferes with fetch lands and tutoring. It is a classic budget-friendly search-hate piece in a similar role.
Maralen of the Mornsongutility$44.06Stops players from drawing and instead forces a search each turn, creating a highly restrictive tutor-centric game state. While symmetrical and more combo-oriented, it interacts with searching in a similar way.
Containment Priesthate$0.89Doesn't stop searches directly, but punishes search-based cheating and tutors that put permanents onto the battlefield. It overlaps as a disruption piece against library-based tutoring strategies.
Drannith Magistratehate$15.81Shuts off casting from exile and commander access, often used alongside search hate to constrain opponents' options. It is not a direct search lock, but it occupies a similar disruption slot in white-based stax.