Greven's Rating system:
5.0: First pick no matter what. I will always play this card.
4.5: Splashable and first pick worthy.
4.0: First pick pack 1.
3.5: Early pick though not always a first pick.
3.0: Solid early/mid pick.
2.5: Solid pick in color.
2.0: Should generally make the deck if in this color.
1.5: Decent filler.
1.0: 23rd card if you have to.
0.5: This card will sometimes be sideboarded in.
0.0: I will never put this card into my deck (main deck or after sideboarding).
How high a pick is this? Landfall or >2 colors makes this pretty important, but how do you even know (before pack 3). I mean it's probably not every more than a "shrug" first pick but I could see getting passed this P2 or P3 in pack 2 and having to make a very touch decision.