Living Terrain
Eighth Edition — uncommon
Enchantment — Aura
Living Terrain rulings:
2008-08-01: A noncreature permanent that turns into a creature can attack, and its abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.
2004-10-04: This can be placed on any land, not just Forests.
2004-10-04: It does give the land a color and creature type, which is unlike most other ways to animate a land.