Koko, Exploring Artist

: Koko, Exploring Artist can be your commander. Whenever a land enters the battlefield under your control, draw a card.
+1: Look at the top three cards of your library. You may put a land card from among them onto the battlefield. Put the rest back in any order.
-4: You get an emblem with "Whenever you tap a land for mana, add one mana of any type that land produced."