Elvish Pioneer with a big butt. I'm sure that someone can come up with a use for this in standard as this sort of ramp is far more resilient than the assorted mana dorks we are used to.
Well, it's a type of ramp. It assumes you have a land in your hand, which at G you probably do. It's worse at mana fixing, but, again, it costs G, whereas Sakura Tribe Elder costs 1G and Farhaven Elf and Kodama's Reach cost 2G, and we haven't had a rainbow dork for G since Birds of Paradise, right? If you run anthems or "put a +1/+1 counter on each creature you control" effects (which, yeah, are usually white, but green can do them), it becomes an effective blocker or attacker.
7/10