Living Terrain

• WWizards of the Coast2004-10-04
  Official Ruling
  This can be placed on any land, not just Forests.
• WWizards of the Coast2004-10-04
  Official Ruling
  It does give the land a color and creature type, which is unlike most other ways to animate a land.
• WWizards of the Coast2008-08-01
  Official Ruling
  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.

Rulings via Scryfall