The only thing keeping Sygg at bay from the #1 spot is the "end of turn" delay on it
It sounds simple, but because there are few restrictions on who, or what, you can damage, it allows you to target cards that are Evasive, cards that aren't exerted, and, really, any card with willpower
Shallow Grave (current price: $5.17) is pretty much the Goryo's Vengeance of Legacy
Likewise, a variety of cards allowing the rerolling or manipulation of dice rolls have also emerged ever since Dungeons & Dragons: Adventures in the Forgotten Realms
Its not about subtletyits about destruction
From what I can tell, this method of using the card slinger does less damage to cards than any mechanical method