ORIGINAL TEXT:
Cultivate

Instant
Search your library for up to two basic land cards and put them into play. If you do, then sacrifice a land and shuffle your library.
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Comments:
I like Harrow. It's a strong card for green. I especially love that it's an instant that puts land into play untapped. There aren't enough of those, in my opinion.
Harrow's big drawback (the one that keeps it from being played, I think) is that you must sacrifice a land as a part of the casting cost. The fear that Harrow might be countered, causing the loss of a player's land without any benefit to the player, might keep many a player from playing Harrow.
I propose to fix that drawback with this card.
This is the kind of card that I might try in a High Tide deck with a green splash.
I scanned the master list, and Horticulture was the closest thing that I could find. It is quite a bit different. I have duplicated the text below for comparison:
Horticulture

Instant
As an additional cost to play Horticulture, sacrifice a nonbasic land.
Search your library for two basic land cards and put them into play tapped. Then shuffle your library.