New Player's Journey is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

When you planeswalk here, each player may search their library for a basic land card, put it into their hand, then shuffle. Whenever you play a card from Foundations or a core set (including Alpha!), draw a card. Whenever chaos ensues, you gain life equal to the number of years you've played Magic, rounded up. Then planeswalk.