It's a green Rain of Tears with an added effect and that's pretty great. I've always been proponent of land destruction, much to my friends' chagrin (I like to so much that I made an EDH deck around it). Land destruction really cripples an opponent and it's an effective tool to keep people behind in the race. Green has some less-than-stellar land destruction (most of it costs 4 or more) but at least it gets this alongside Winter's Grasp and Ice Storm (remember when green represented ice and winter?). The fact that it gains you a life if it's a snow-covered land is just a tiny dollop of whipped cream on top of the strawberry sundae. Not a huge dollop that makes you wonder why you bothered ordering something that's 90% whipped cream, but a small one that adds that nice touch without taking away from the sundae itself.
Pros: Green Rain of Tears, potential for lifegain
Cons: Double green