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
Most green decks want a steady amount of this effect, and you cant go wrong with Guardian Project
This typically means mana-acceleration effects that will help you produce eleven mana naturally for someone like Ulamog, the Infinite Gyre when you can't bring him to class for Show and Tell
That could be an Elesh Norn, Grand Cenobite or Avacyn, Angel of Hope you're popping into play for the low price of 3 mana and bouncing a tapped creature back to your hand, which is possibly additional upside with the right ETB creatures
Hardened Scales, Walking Ballista, and Steel Overseer never got time in Standard together, but you can combine them all in this new format
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