lucky him, well he had good cards and good luck it happens but nice combo ... do you happen to remeber the card name the one that lets you draw a card for each land that come to play?
What You See & What You Seem Is But A Dream Within A Dream - Edgar E.Po
trust me, that since that dude drew his almost entire deck with his horn of greed (that card that enables players to draw a card when they lay a land), he would have had a force of will of his own for yours.