Nissa, Voice of Christmas

+1: Look at the top 2 cards of your library. If one is either a Christmas Elf or a Land, you may reveal it and put it into your hand.
-3: Target land you control becomes a 3/3 Holiday Elemental creature. Its still a land.
-7: You get an emblem with "Attacking creatures you control get +3/+0 and Trample."