13 cards where it’s legal in Commander and the text matches the regex /can't search|whenever.*s(earches|huffle).*,|if.*would search.*,/

Archivist of Oghma (Commander Legends: Battle for Baldur's Gate #4)
Aven Mindcensor (Commander Legends: Battle for Baldur's Gate #688)
Cosi's Trickster (Zendikar #45)
Leonin Arbiter (Double Masters 2022 #16)
Mindlock Orb (Shards of Alara #51)
Ob Nixilis, Unshackled (Double Masters 2022 #84)
Psychic Surgery (New Phyrexia #44)
Psychogenic Probe (Mirrodin #231)
River Song (Doctor Who #152)
Shadow of Doubt (Ravnica: City of Guilds #253)
Stranglehold (Commander Anthology #87)
Thada Adel, Acquisitor (Worldwake #40)
Widespread Panic (Commander 2013 #131)

The arc of my blade has carved a path of light to the end of these results.