If only the merfolk deck wants a particular merfolk card, then the merfolk deck is most likely to pick it up every draft it shows up in
Looking closer at the evidence means building a case, which is how some cards will appear with their showcase dossier treatments to add to the file
Ok Klara #145 (Pokemon Chilling Reign) Details All prices are the current market price
A Commander that cares about instants an sorceries in our graveyard would be Dralnu, Lich Lord
Edric, Spymaster of Trest Edric, Spymaster of Trest leverages blues many unblockable creatures, like Mist-Cloaked Herald and Slither Blade, to slip through your opponents defenses and rip through the deck to chain together extra turn spells, and eventually conclude the game with a Beastmaster Ascension or something
For individual cases, 5mm PMMA acrylic ensures both clarity and protection