A few days ago a Lebron James Gold Prizm sold for $793K, and in August we saw the monster sale of the Michael Jordan and Kobe Bryant Dual Autograph (1/1), which set the record for highest selling sports card of all time when it sold for $12.9M
Poison is tracked by counters, and once a player has ten poison counters they immediately lose the game
Add a smattering of cards from these categories, or at least realize they just got better in your cube: Exalted creatures: Noble Hierarch, Sublime Archangel, Qasali Pridemage, Knight of Glory, Rafiq of the Many Battle Cry Creatures: Accorder Paladin, Goblin Wardriver, Hero of Bladehold/Oxid Ridge, Soltari Champion, Pianna, Nomad Captain, Anthems: Glorious Anthem, Spear of Heliod, Honor of the Pure, Ajani Goldmane, Elesh Norn (Okay that might be a bit of a stretch), Gavony Township, Curse of Predation, Gaeas Anthem, Miraris Wake, Mikaeus, the Lunarch, Mirror Entity, Sorin, Lord of Innistrad Overruns: Overrun, Overwhelming Stampede, Garruk Wildspeaker, Craterhoof Behemoth (Again, probably a stretch) Auras: Rancor and its bigger cousin Angelic Destiny, but I still see Griffin Guide and Elephant Guide every now and again
return that monster you control to the hand, and if you do, move this card you control to that monster's Monster Zone