Lidran, Renowned Adventurer

At the beginning of each player's upkeep, if that player controls four or more lands, he or she may draw a card.
At the beginning of each player's upkeep, if that player controls seven or more lands, he or she creates a 5/5 green Dinosaur creature token with trample.
At the beginning of your upkeep, if you control twenty or more lands, you gain 20 life.