Can't decide if this is underpowered or overpowered.

Whee. Nice effect, certainly. A little reminiscent of Endless Horizons, in that each turn you get a land-drop and a normal card draw; also reminds me of Abundance, though that was more giving you your choice of which you want.

Spectacular with looters, but other than that this looks fine as a 4- or 5-mana rare enchantment.

Do you think this could lose the "for the first time in a turn?" I mean, that can be crazy if you hit a pocket of land cards, but this does absolutely nothing if you don't hit land.

Hmm. I think this could stand to go up in power level a little, whether that be by going down to 4 mana or getting slightly nicer rules text. Don't know if you want to speed past all lands... At that point this is something like Countryside Crusher, but that seems fine on a 5-mana gold rare.

Out of curiosity, would this alternative work, Link?

"Whenever you would draw a card, instead reveal the top cards of your library until you reveal a non-land card. Put a land from among the revealed cards onto the battlefield, put one of the revealed cards into your hand, and the rest on the bottom of your library in any order."

Hmm... maybe that's too many words.

Also a heck of a lot better.