Warden of Leaves

Whenever a nontoken creature enters the battlefield under your control, choose one -
• Draw a card.
• Create a 1/1 green Elemental creature token
with that creature's abilities. Exile it at the
beginning of your next end step.
• Untap target land you control.
From the grubs under the tree's bark to the falcons
soaring above, he knows each and every one
of them.