Ruk'e, Inspiring Storyteller

When Ruk'e, Inspiring Storyteller enters the battlefield, it explores.
Whenever another Na'vi creature enters the battlefield under your control, it explores. (Reveal
the top card of your library. Put that card into your
hand if it's a land. Otherwise, put a +1/+1 counter on
this creature, then put the card back or put it into your graveyard.)