Name a basic land you aren't playing, or a key land a few others have, like Maze of Ith, and then force them to head out to the exile zone every other turn, and you will be able to deal with junk
Going back to the Elves example, there are plenty of generically powerful Elves that you could include in a Cube to get players to start to move in on the archetype
Deadeye Navigator Shop Deadeye Navigator on eBay Whether you love him or you hate him, the shear fact is that Deadeye Navigator is an extremely powerful creature
Haste enablers are staples, and the Heat Shimmer effect has way more impactful targets
They can be, but they risk a two-for-one when the enchanted creature is removed
In a few rare cases, my spellbook was running low on cards and I eventually started drawing the cards I rearranged at the bottom