Most of the cards in this set are reasonable for a "greatest hits / fixed classics" set. But this is Rampant Growth in white. Um...

Its actually Nature's Lore in white. As far as white land ramp, as long as its not an overwhelming presence, what's the issue?

Colorshifted: Nature's Lore

"What's the issue" - It's not power level, it's just a philosophy thing. Why should white get this? It takes away from what's distinctive about green. In particular white and green are the two colours that are the most similar to each other, mechanically and flavourfully, so making further strides towards blurring the lines between them seems a very bad idea.

Why does green get Fog? Is fog exceptionally dense in the woods? I couldn't tell you. Flavor-wise I feel like Noble Heritage works. White's all about community, and a community of organized people probably have some way of working out property rights. Green's all wilderness and untamed growth. White can dabble with its Land Taxes.

I'll admit that green and white do share a lot of similarities but in my mind, white having creatures as large as green is a far worse offense. And again, no idea why green gets damage prevention. Tangle is the only one that makes sense to me off the top of my head.

Green gets damage prevention because it needs it mechanically. Wizards has tested it in other colors and it wasn't as good for game play. Read this.

Aha, a Gift of Estates tweak on this is very sensible. That's got quite a bit of precedent (Land Tax, Weathered Wayfarer etc) so yes, with this design I think I withdraw my colour pie objections. It does still accelerate you, which none of those do, and works especially well if you're playing second... hmm...