Possibly the most vital card here is Steward of the Harvest, which lets you turn all your creatures into up to three lands that you can exile from your graveyard
No hoops, destroy it, nonblack, just gone
Full-Art Core Lands Ixalan's Magic in Every Basic Land
Priority 1: Thoughtseize their best card
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Earth Crystal's first ability)
Savvy players of a deck known as "The Deck" used to throw in a couple of copies of this card-advantage artifact remover in order to, well, gain card advantage, while improving their board positions