Gaia Superior

You may untap 13 Cats or Kittens instead
of paying for Gaia Superior's Casting Cost.
Untouchable, except by its Controller.
{4}{g}{g},{t}: Create a 5/5 Green Jumbo Cat
Token or a 2/10 Green Jumbo Kitten Token.
{g}: Regenerate Target Cat or Kitten.
{t}: Add {g}{g}{g} to Your Mana Pool.