You can only activate 1 "Ledger of Legerdemain" per turn
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While there could eventually be a creature deck that wants that effect, I don't know that they'd be willing to run an anemic creature and I'm certain that the deck doesn't currently exist
Fans eager to try their luck at obtaining the One Ring card will get the chance to own it if they purchase an English-language Collector Booster pack, which goes for slightly more expensive than the usual packs, but you might just win it big
One of the best cards from these sets is Grave Scrabbler, which still sees a fair amount of play in formats like Commander to this day
If it is an Equipment, it is not attached to any creature