It isnt much to go on, but if you see someone with, say, a large amount of Unglued Plains, Mountains, Swamps, and Islands for trade but no Forests, alarm bells should ring in your brain
A handy EDH deckbuilding tip is to look for artifact destruction thats either flexible, like Tear Asunder, or synergizes with your game plan, like Sundering Growth in token decks
Big Names to Collect: Starter Pokmon The appeal of any specific Pokmon is entirely subjective, and collectors gravitate toward certain subjects for various reasons
Creature - Vampire Soldier Color tag templates(None) Gray Merchant of Asphodel When this creature enters, each opponent loses X life, where X is your devotion to black
Of course theyll be easy to spot if you have any in your collection, but I thought its worth mentioning as these cards are highly sought after by collectors
Pack in your favorite Exploration and Conduit of Worlds clones, some landfall abilities, and some ramp, and youve got a deck