28 cards where (the card types include “legendary” and the card types include “dinosaur”)

Akim, the Soaring Wind (Commander 2020 #6)
Blue, Loyal Raptor (Jurassic World Collection #8)
Etali, Primal Conqueror // Etali, Primal Sickness (March of the Machine #137)
Etali, Primal Conqueror // Etali, Primal Sickness (March of the Machine #137)
Etali, Primal Storm (Murders at Karlov Manor Commander #152)
Ghalta and Mavren (March of the Machine #225)
Ghalta, Primal Hunger (Commander Masters #292)
Ghalta, Stampede Tyrant (The Lost Caverns of Ixalan #185)
Gishath, Sun's Avatar (The Lost Caverns of Ixalan #229)
Illuna, Apex of Wishes (Dominaria United Commander #154)
Indominus Rex, Alpha (Jurassic World Collection #14)
Indoraptor, the Perfect Hybrid (Jurassic World Collection #15)
Invasion of Ikoria // Zilortha, Apex of Ikoria (March of the Machine #190)
Invasion of Ikoria // Zilortha, Apex of Ikoria (March of the Machine #190)
Itzquinth, Firstborn of Gishath (The Lost Caverns of Ixalan #230)
Kalamax, the Stormsire (Commander 2020 #9)
Kamachal, Ship's Mascot (Alchemy: Ixalan #15)
Keruga, the Macrosage (Ikoria: Lair of Behemoths #225)
Kogla and Yidaro (March of the Machine #244)
Nezahal, Primal Tide (Commander Legends #401)
Pantlaza, Sun-Favored (The Lost Caverns of Ixalan Commander #4)
Snapdax, Apex of the Hunt (Ikoria: Lair of Behemoths #209)
Tetzimoc, Primal Death (Rivals of Ixalan #86)
The Tarrasque (Adventures in the Forgotten Realms #207)
Thrasta, Tempest's Roar (Modern Horizons 2 #178)
Vadrok, Apex of Thunder (Ikoria: Lair of Behemoths #214)
Yidaro, Wandering Monster (Ikoria: Lair of Behemoths #141)
Zacama, Primal Calamity (The Lost Caverns of Ixalan Commander #296)
Zetalpa, Primal Dawn (The Lost Caverns of Ixalan Commander #141)
Zilortha, Strength Incarnate (Commander Masters #366)

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