With over 15 000 different cards, several with multiple versions, there's a huge library of cards to discover and rediscover, and whole boatloads of art
In a multiplayer environment, getting to steal an opposing Commander is sweet
Three cards for 3 mana is solid, but you have to cast them on the same turn
There's so much looting and rummaging that you get to churn through your deck quickly, reducing variance and making sure you find the cards you need (and discarding the ones you don't) reliably, WITH ONE MAJOR EXCEPTION (see The Bad) It's very consistent
Bloodchiefs Thirst When youre looking for a removal spell, flexibility is key
Elesh Norn Legendary Creature / Phyrexian Praetor from the recently released March of the Machine Set Numbered out of 500 Easily one of the most popular creatures as of late for both MTG collectors and players