When this creature enters, you may search your library for a land card, put it onto the battlefield tapped, then shuffle
Using it to churn out a dragon is nothing short of great
Given that this has a special name, it seems highly likely well be getting these boosters again - and thats not necessarily a good thing for the game
With cards like Castle Ardenvale and Restless Anchorage among plenty of places to sink extra mana, the high land count ensures the deck will usually play its impactful 4-drops on curve, and have plenty of uses for extra land drops in the late game
For added flavor, the loss on the big ceature -0/-1 matches the size of the creature produced, a 0/1
If an effect allows a player to cast a spell without paying its mana cost, that player can't choose to cast it and pay its mana cost unless another rule or effect allows that player to cast it that way