Each Happy Meal pack comes with four cards, with the first one being holographic
Obviously, time and the growth of the Internet made Wizards realize that sharing information, not withholding it, was a key part of building the community and metagame
Aside from that, it distributes mana to each player, and, as an unexpected receiver of said mana, it can be interesting to find ways to filter that mana into different mana sinks to avoid the inevitable mana burn
You spend less on each one and couple it with additional power and toughness, to break the balancing that Wizards does for beast creatures
By default, these goats lack any Power and have very low Toughness, making them questionably useful in a fight
Affordable Way to Chase Rare Cards