Forest's Rebirth

Tap a target creature until it's owner's next upkeep step. When it untaps, transform the creature into 1/1 Green Treant creature token. If the creature had the sub-type Demon, Zombie, Werewolf, Vampire or Elemental, the Treant token gains a -1/-0 token.

The roots gripped the beast, around it's chest and through the heart and it was only moments later, that they beast returned to the forest.