The God of the Land

Whenever a land enters the battlefield under another player's control, you may put a land card from your hand onto the battlefield. If you do,
you may put a +1/+1 counter on target creature.
If you don't put a +1/+1 counter on a creature, you gain 2 life.
At the beginning of your upkeep, search your library for a land card, put it into your hand, then shuffle your library. Then, if you control 5 or more lands, draw a card.