15 cards where the card is in the spellbook for “oyaminartok, polar werebear”

Archipelagore (Ikoria: Lair of Behemoths #41)
Junk Winder (Murders at Karlov Manor Commander #107)
Moat Piranhas (Core Set 2020 #67)
Mystic Skyfish (Core Set 2021 #326)
Nadir Kraken (Murders at Karlov Manor Commander #112)
Nezahal, Primal Tide (Commander Legends #401)
Pouncing Shoreshark (Ikoria: Lair of Behemoths #64)
Pursued Whale (Commander Legends: Battle for Baldur's Gate #732)
Riptide Turtle (Theros Beyond Death #61)
Ruin Crab (Zendikar Rising #75)
Sea-Dasher Octopus (Ikoria: Lair of Behemoths #66)
Sigiled Starfish (Jumpstart #177)
Spined Megalodon (Core Set 2021 #72)
Stinging Lionfish (Theros Beyond Death #69)
Voracious Greatshark (Ikoria: Lair of Behemoths #70)

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