Neptune, Elitist Competitor

When Neptune, Elitist Competitor enters the battlefield, put a land from your hand onto the battlefield. If you don't, gain 4 life.

{b}{r}{g}, pay 4 life: Name a card outside the
game with a converted mana cost of 5 or less.
Put that card into your hand. It gains "this spell cannot be countered."

{w}{u}: Tap target creature. Draw a card.