Once attached, you cant target Cap with other equipment unless you either move the boots to another creature or use your commanders first ability to detach it, which can be handy if Captain America is your only creature
A patent was granted to Wizards of the Coast in 1997 for "a novel method of game play and game components that in one embodiment are in the form of trading cards" that includes claims covering games whose rules include many of Magic' s elements in combination, including concepts such as changing orientation of a game component to indicate use (referred to in the rules of Magic and later of Garfield's games such as Vampire: The Eternal Struggle as "tapping") and constructing a deck by selecting cards from a larger pool
But there are a fair amount of more common Pokemon cards that could sell for hundreds or even thousands of dollars
Throw as much mana as you can into it, and it provides a solid body that can threaten immediately with haste, ignore chumps with trample, and defend against retaliation thanks to vigilance
The Dark-type Charizard ex card has 330 HP and a single attack that still requires Fire energy
Perhaps more exciting to some is the Ancient Copper Dragon reprint, Dragon of Mount Gulg