Thelonite Druid

• WWizards of the Coast2004-10-04
  Official Ruling
  The most recent land animating ability takes precedence.
• WWizards of the Coast2004-10-04
  Official Ruling
  Only affects Forests that are on the battlefield when the effect resolves.
• WWizards of the Coast2004-10-04
  Official Ruling
  The land animation ability does not wear off if the land stops being a Forest. It continues until the end of the turn.
• WWizards of the Coast2004-10-04
  Official Ruling
  Can sacrifice the Druid to itself.
• 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