Mass land destruction also crops up less frequently, too, which helps to foster an environment where ramp isnt punished and, if anything, it thrives
Singles deliver certainty
And seriously, if you can break Cadaverous Bloom, I would love to hear how.
That means with a little chip damage up front, Sneasel can swing in and KO something big for just one Energy
Of course, there's also Gix, Yawgmoth Praetor's activated ability which can serve as a powerful lategame finisher: 7 mana is a ton for this deck and you need a full grip of cards to consider it, but exchanging a full grip of 1-mana 1/1's and Swamps for your opponents better cards is a great way to overwhelm the table
Because the ability to buy individual cards is so helpful, you should only ever spend these when building a specific deck