When Inquisitive Navigator enters the battlefield, it explores, then it explores again. (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. Then repeat this process.)

At the begining of your upkeep, if an opponent controls at least two more lands than you, return Inquisitive Navigator from your graveyard to your hand.