Most green decks want a steady amount of this effect, and you cant go wrong with Guardian Project
Something like Charred Foyer // Warped Space may not be at its best in this deck (as much as I want to, I wont talk about how well thisd fit in a Prosper, Tome-Bound EDH deck), but if you manage to unlock both doors, you essentially have a nice engine that works by itself
Legendary Enchantment Ramp (CTRL to add secondary) Removal Archdruid's Charm Choose one Search your library for a creature or land card and reveal it
Ulvenwald Oddity / Ulvenwald Behemoth Ulvenwald Oddity is the perfect addition to the mono-green stompy deck
Trance ability allows her to mill two cards at the beginning of the combat phase in order to gain flying, which means she can't be attacked except by other creatures with flying
And up through 2016, you had to run a Five Color deck in Commander to play it as it needs at least four colors of mana to run