Naiya, Cunning Cartographer

Nonbasic Landwalk
Naiya's power and toughness are equal to
half the number of lands you control.
When Naiya enters the battlefield explore X times, where X is equal to Naiya's toughness
Whenever Naiya deals combat damage to an opponent, you may put a number of lands
from your hand onto the battlefield equal to
Naiya's power.