Doesnt directly work with the ramping theme but is one of, if not the single most powerful green card in Standard on its own
Green already has a lot of creatures that produce mana (Innistrad Remastered's Somberwald Sage is one that just didn't quite make the cut for this list), but what if all your creatures could produce mana
Ashen Rider 6 The new improved Angel of Despair
To be fair, though, neither is the opponent
But I also want to look out for cards that were excluded from the precon, like Ebonblade Reaper, which can drastically change an opponents place in the game, or Primordial Mist, which can turn manifested instants or sorceries back into spells
Is Soulcipher Board // Cipherbound Spirit legal to play