Being an enchantment creature is often a downside, its been outclassed by cards like Augur of Autumn and Dryad of the Ilysian Grove, and revealing everything you draw is a tangible downside that gets overlooked too often
The real ability here though, is At the beginning of combat on your turn, up to one target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is Obuuns power
It has a low casting cost, and since many infect creatures are cheap to cast, it's likely you were able to get a few infect counters on your opponents, allowing for Yawgmoth to begin using its proliferate ability to add on more to them
2 I have no idea what the convention is for capitalization on the word, "Shotgun" when used to refer to the front seat of a car
Prices are updated based upon Magic Hour of Devastation listings that sold on eBay and other marketplaces
"Its famous for being an absolutely overpowered card that warped the play environment for a while," r/MTG user SisterHummingbird told The Independent , citing it as one of several decks that could "win a game on the first turn"