When building a 60-card deck, having seven copies of Seven Dwarves means you have decent odds at getting two or possibly even three of them on the battlefield, which makes each of them bigger
Exerting, Rushing, bouncing, and generally frustrating your opponents plans are all brought up to are we there yet levels of annoying fun
I have a Meren of Clan Nel Toth deck that REALLY needs to have at least one Green source very early or it's dead, that deck runs 19 Green lands, and even though the deck is mostly Black spells the deck only runs 11 Black lands
While more sales are required to confirm the market price, it's likely to stay around the same price for the time being
If you could cheat it onto the battlefield early using some other effect, you can turn your opponents permanents against them