We also have lots of poison payoffs like Glistening Sphere, a 3-drop mana rock that proliferates and taps for 3, Distorted Curiosity, 1 mana draw 2, and Corrupted Resolve, a straight up Counterspell that is easier to cast
Green ramp usually want to skip past the midgame stuff and go right into dominating the game with top end juice
Champion has more colour intensity and a higher mana cost on the recursion in relation to its stats
Cards like Genie, Power Unleashed will let you cast AWNW for free later in the game, while providing a body that can keep opposing characters in check
In the end, whether you're looking to sell some cards or just enjoying Magic: The Gathering as a collector, you will ultimately find yourself with a stack of cards sitting in front of you wondering what they are worth