11 cards where the name includes “stun”

Access Tunnel (Outlaws of Thunder Junction Commander #270)
A-Steadfast Unicorn (Alchemy Horizons: Baldur's Gate #A-104)
Brass's Tunnel-Grinder // Tecutlan, the Searing Rift (The Lost Caverns of Ixalan #135)
Brass's Tunnel-Grinder // Tecutlan, the Searing Rift (The Lost Caverns of Ixalan #135)
Steadfast Unicorn (Commander Legends: Battle for Baldur's Gate #44)
Stun (Tempest Remastered #163)
Stunning Reversal (Battlebond #51)
Stunning Strike (Commander Legends: Battle for Baldur's Gate #97)
Stun Sniper (Duel Decks: Heroes vs. Monsters #7)
Stunt Double (Ravnica: Clue Edition #101)
Stunted Growth (Masters Edition II #179)
Uninvited Geist // Unimpeded Trespasser (Shadows over Innistrad #94)
Uninvited Geist // Unimpeded Trespasser (Shadows over Innistrad #94)

The message was clear to Sorin—time to search for something else.