By playing Kida, Protector of Atlantis, players buy themselves at least another turn to play more characters and/or use those characters to either gain lore or banish opposing characters
That means you could receive opened products and not be able to return them
Like most Magic: The Gathering cards, the value of Jaws of Stone depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Shadowmoor)
Chishiro, the Shattered Blade Enduring Tenacity Hexdrinker Hooded Hydra Ikra Shidiqi, the Usurper Kadena, Slinking Sorcerer Kaseto, Orochi Archmage Lotus Cobra Mystic Snake Omarthis, Ghostfire Initiate Rottenmouth Viper Sidisi, Brood Tyrant Vizier of the Menagerie Xyris, the Writhing Storm