21 cards where the illustration contains “dungeons-and-drag...”

Asmodeus the Archfiend (Adventures in the Forgotten Realms #88)
Bane, Lord of Darkness (Commander Legends: Battle for Baldur's Gate #415)
Bane, Lord of Darkness (Commander Legends: Battle for Baldur's Gate #526)
Bane's Contingency (Commander Legends: Battle for Baldur's Gate #57)
Bhaal, Lord of Murder (Commander Legends: Battle for Baldur's Gate #416)
Bhaal, Lord of Murder (Commander Legends: Battle for Baldur's Gate #527)
Grand Master of Flowers (Adventures in the Forgotten Realms #17)
Grand Master of Flowers (Planeswalker Championship Promos #2022-1)
Grand Master of Flowers (Adventures in the Forgotten Realms #282)
Lolth, Spider Queen (Adventures in the Forgotten Realms #112)
Lolth, Spider Queen (Adventures in the Forgotten Realms #284)
Lolth, Spider Queen Emblem (Adventures in the Forgotten Realms Tokens #17)
Myrkul, Lord of Bones (Commander Legends: Battle for Baldur's Gate #287)
Myrkul, Lord of Bones (Commander Legends: Battle for Baldur's Gate #433)
Temple of the Dragon Queen (Adventures in the Forgotten Realms #260)
Temple of the Dragon Queen (Adventures in the Forgotten Realms #357)
The Atropal (Adventures in the Forgotten Realms Tokens #5)
Tiamat (Adventures in the Forgotten Realms #235)
Tiamat (Secret Lair Drop #1017)
Tiamat (Adventures in the Forgotten Realms #298)
Tiamat // Tiamat (Adventures in the Forgotten Realms Art Series #26)
Tiamat // Tiamat (Adventures in the Forgotten Realms Art Series #26)

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