Terra provides the all-important self-mill needed in a reanimator strategy, albeit in small increments
This makes it one of the best cards you can find in Wilds of Eldraine, and comfortably the strongest Artifact
If an effect allows you to spend mana "as though it were mana" of any color or type, that allows you to spend mana you couldn't otherwise spend, but it doesn't change what mana you spent to cast the spell
Key budget cards to include: Umbra Mystic, Ethereal Armor, All That Glitters, Sythis, Harvests Hand, Sanctum Weaver #06 Urtet, Remnant of Memnarch (Down from #04) While Urtet might have been moved down a couple of spots, it isnt for any fault of the deck
Its not an approach I often take, but when I do, I only get better and better at the art of not needing subtlety
For the uninitiated, the name "eggs" originates from the Modern deck you can check out here