Genesis Forest

({t}: Add {g})
Genesis Forest enters the battlefield tapped.
{x}{g}{g}{g},{t}, exile Genesis Forest: Reveal the top
X cards of your library. You may put any number
of permanent cards with converted mana cost X
or less from among them onto the battlefield.
Then put all cards revealed this way that weren't
put onto the battlefield into your graveyard.
End the turn. Activate this ability only on your
turn.