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Hero's Blade is an Equipment from the Khans of Tarkir block that gives the equipped creature +3/+2, and if a legendary creature enters the battlefield, this sword can be equipped to it at no cost

But it got me thinking

By sacrificing creatures, Ayli allows her controller to gain life equal to a sacrificed creature's toughness

Already the card seems to have cooled off a little, but it just goes to show how much of an impact one person can have on a Pokmon card's price, especially if they have an audience

One such card was called Curiosity

It was very heavily printed and underwhelming in power levels for TCG players