Individual cards that ramp, like mana dorks, are in high demand but I don't think ramp is a distinct or necessary part of green's identity. As said above I view them as cards I put in my midrange deck, not planks of an archetype.
Marshmist Titan
Creature - Giant
Marshmist Titan costs X less to cast, where X is your devotion to black.
A favorite of Erebos, for it has sent many to the Underworld.
Illus. Volkan Baga
4/5
Devotion Pod lives!
Yeah, Herald of Torment is the only card I'm looking at. Maybe the Lion King, but he's just so dull.
I'd like to find a way to make Chromanticore work, though. We're close to the point where Replenish is a viable card.