Why its a contender: It is arguably the most efficient and unconditional creature removal spell ever printed, permanently handling any threat for a single mana
It's not a particularly nuanced card, but there's power packed into this 8-mana 10/10, assuming you can cast it
Quick Effect Negation: Can send an Equip Card to negate an opponent's card or effect activation, destroying that card
That makes them a potentially stable long-term hold for those who can afford the high barrier to entry, but it also makes them thinly traded, so prices move on very few data points
For Yu-Gi-Oh Duel Monsters, you start with the option to face Yugi, Joey, Tristan, and Bakura with the goal being to beat each of them five times to advance