Tower Wurm

Indestructible
When Tower Wurm enters the battlefield, create a token called Wurm Statue with "This token cannot be returned to it's owner's hand." When a permanent you control called Wurm Statue goes to the graveyard or is exiled, sacrifice Tower Wurm.
As the statue hit the tower and shattered, cracks started appearing in the wurm's body. It froze, and then shattered into a million pieces.