Now that we have more information, however, it appears things go even further than that
I have no recollection of how that happenedI guess I was good at ripping other kids off, and maybe I traded some sports cards for them as well
In summary: Whatever the source (rule or explicit), Breeding Pool needs 2 mana abilities because other cards can take away one basic land type (and thus mana ability) while leaving the other intact - 305.6 simplifies the templating necessary to add and especially take away mana abilities based on the basic land types a land gains or loses
10 Final Fantasy 4 - 20 Cards Daredevil Cid Leads The Pack Final Fantasy 4's 20 cards are, naturally, inclusive of legendary creatures for Cecil, Rosa, and Kain
This list is chock-full of some incredibly valuable cards that debuted in 2024, almost all of which came from Collector Boosters, the extremely pricey booster packs that are made for devoted collectors (and investors)