While Dead Weight didn’t see much competitive play for a long time, it found a home in Pauper Dimir Control decks. While Pauper was more of a Magic Online format for years, it found its way into paper. So, this is a very good common to have around. However, with its reprint in Guilds of Ravnica, Dead Weight began play at two copies in the occasional Blue/Black Control and Grixis Control decks in Standard.
Dead Weight is a very simple Enchantment. It costs one Black mana to cast and gives the enchanted creature -2/-2. It’s strong early game removal, but it’s also a nice way to weaken a bigger creature that might be out of range of your other removal spells. It also can bring a bigger opponent's creature down to the level of your own creatures. Dead Weight is definitely not a dead card at any point in the game, which is why it would see occasional Standard play.
While Dead Weight isn’t the most exciting common, players don't mind stocking up on copies. This is definitely a card to watch for and get ahold of as you see them, especially in foil. As it has been a part of many draft decks, there are plenty of copies to go around.