Instead, it's the fact that it allows the player to draw two cards when an equipped creature dies that pushes it over the top The potential card advantage is unreasonable for a single mana investment, especially since the -1 to Toughness makes it extremely easy for the player to kill their own creatures on command
An undisclosed but limited quantity was given away during D23, and now some of them are popping up on eBay and other online auctioning sites asking for the kinds of money that already established trading card games, such as Magic: The Gathering and the Pokmon TCG
That said, its almost like a staple in cards that care about going wide, tokens, and the like
1 premium Pokmon card graded (PSA, CGC, BGS, SGC) or ungraded raw, selected for quality and desirability