Constellation Nylea

Constellation - Reveal the top card of your
library, put it into your hand. otherwise put it
onto the bottom of your library.
{2}{g}: Add 3 mana of any color, use this only to
cast creature or enchantment spells.
{0}: Constellation Nylea becomes a 6/6 God
Incatnation creature with Reach until end of
turn. Use this only if you Devotion to Green
is 7 or more and you do not control a creature
named Constellation Nylea.