He also can move to any location for free whenever you play them, meaning with the location you put out for free this turn, hell effectively be allowed to head there straight away on the turn you played him for no cost
Likely due to the Rhystic Study
Of course, his card being enchanted in rarity helps that a lot, but he's also a valuable card that can halt your opponent's progress and win you the game
There are other ways to draw a lot of cards with white, but I'm partial to the enchantress strategy, which in my opinion is some of the best card draw in the game, let alone for mono-white decks
The Good Currently bugged on Magic Online (so it reduces mana costs by two of any combination of black, red or generic mana), which makes it way more powerful than it should be (for example, we can cast a Fanatic of Mogis for free with two copies of Ragemonger on the battlefield)