Lets look beneath the hood and figure it out
The Commander's Cache is large and roomy, so you can stay flexible and enjoy your game
Jace, the Mind Sculptor I dont know what it is about Jace, the Mind Sculptor, but something about the incredible power level of this card paired with its long-term seat on the banlist make it such an ominous and powerful card
You want to flood the battlefield with creatures, and constantly swing them at your opponents
Finally, decks that do a great amount of exploring make their land drops, so its only natural to play big impact cards like 7+ mana value cards, and ramp decks share in the goods from explore
You can definitely removing some combination of dual lands and basics to add fetches given that sacrificing permanents is a heavily incentivized action in the schema of your input/output machine