For example, if a creature is wearing a hat in its art, it's still wearing a hat, even if you cover the hat with a sticker
With that you are going to love Blue stuff that beats, like Invisible Stalker that cannot be blocked and its often run as an Aura or Equipment dork to swing with due to it's hexproof, or tappers like Arcanis, the Omnipotent that taps to draw three and now four and discard one
That being said, at just three mana, Tezzeret, Cruel Captain may be cheap enough so that incremental value over the course of a few turns may be powerful enough
Miracle Worker has some obvious potential upgrades, and the likes of Vedelkan Orrery would negate the downsides of those sorcery spells nicely
So yes, there were the base Mana producing elves, Fyndhorn Elves and Elder, but the fast Mana for Green came from Tinder Wall, which changed the way Green/Red decks were build forever
This list will be a heavily modified Buckle Up precon from Kamigawa Neon Dynasty, with a focus on token creation to use to pilot our mechs