It's also hate that doesn't necessarily conflict with some other artifact strategies the way Stony Silence and others might - if a player has more expensive artifacts in their deck, for instance, Meltdown is still a great sideboard card that likely won't destroy their own game pieces but will still affect a cheaper-costed deck
Ideally, you can activate an ability of one of your cards that requires you to discard a card
However, if that Land is a Plains, then you actually get to put that nonland permanent back on the battlefield instead
I have had Library in my unpowered drafting cube for nearing a year now and it has like a 40% win rate at best as a turn one play
There are a surprising number of Snakes or cards that make Snakes in Golgari, such as Ophiomancer and Hapatra, Vizier of Poisons
Especially if we're talking about value cards like Decree of Justice that build up your board