Also, once again, in 1v1 gameplay, you yourself will be one of the 2 players, meaning your equipment, controlled and owned by you, will fall off the creature because it can't be targeted or equipped by your stuff as soon as it has protection from you, making it quite the useless sword
And on top of that, when Shadow Mist is sent to the graveyard, you can search out any HERO monster from your deck & add that to your hand
It will then Banish those Monsters, one of the best kinds of removal in all of Yu-Gi-Oh
Youll fill the deck with looting/rummaging effects, and then proceed to create copies of big, impactful artifacts like Cityscape Leveler and Blightsteel Colossus
I would also rather obliterate my opponents with Infinite Force than cripple my own consistency with situational healing cards
Recent reprints in Masters 25 and Double Masters helped to make affordable versions available at around $40, but thats still quite the price tag for a single card