Unless, of course, you want to
We buy almost everything from High-End rarities (Power Nine, Dual Lands) to massive collections with thousands of Commons/Uncommons (Bulk)
Emrakul, the Aeons Torn isn't easy to get into play through mana, but spells like Summoning Trap, Through the Breach, and Sneak Attack can and have been used to cheat Emrakul into play for far fewer mana
You can't really have a functioning EDH deck without lands
Some cards that I think could build out this shell: Ugin, Eye of the Storm Summon: Bahamut Solemn Simulacrum Adventurer's Inn The Irencrag Sire of Seven Deaths Mazemind Tome Fountainport Jill, Shiva's Dominant & Joshua, Phoenix's Dominant Jill and Joshua are two cards that feel powerful enough in Standard, that feel like they slot into a number of already existing archetypes
This even includes old Werewolf cards which dont rely on the new Daybound mechanic