22 cards where the illustration contains “bident-of-thassa”

Bident of Thassa (Theros #42)
Bident of Thassa (The Brothers' War Commander #80)
Bident of Thassa (Theros Promos #42★)
Bounty of the Deep (Jumpstart: Historic Horizons #8)
Kiora, Behemoth Beckoner (War of the Spark #232)
Kiora, Behemoth Beckoner (War of the Spark #232★)
Kiora Bests the Sea God (Theros Beyond Death #52)
Kiora, Master of the Depths (Battle for Zendikar #213)
Kiora's Dambreaker (War of the Spark #58)
Kiora, Sovereign of the Deep (March of the Machine: The Aftermath #170)
Kiora, Sovereign of the Deep (March of the Machine: The Aftermath #214)
Kiora, the Tide's Fury (Jumpstart: Historic Horizons #10)
Nullify (Born of the Gods #45)
Pin to the Earth (Journey into Nyx #45)
Ray of Dissolution (Theros #27)
Resurgent Belief (Modern Horizons 2 #385)
Spark Rupture (March of the Machine: The Aftermath #5)
Thassa, Deep-Dwelling (Theros Beyond Death #261)
Thassa, God of the Sea (Theros #66)
Thassa, God of the Sea (Secret Lair Drop #71)
Tightening Coils (Battle for Zendikar #86)
War of the Spark (2019 Heroes of the Realm #3)

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