_:naf5f2e2ba3234dd19ba01689a1686a22xb4
<http://schema.org/text>
"The mana curve affects the land count by requiring a balanced distribution of mana costs, following the 40% rule for a 60-card deck to have around 24 lands."
<https://www.mtgacentral.com/how-many-lands-should-be-in-a-60-card-mtg-deck/>