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That's a lot of use, and this card is arguably better than Opt since you'd rather throw the card into the graveyard that you don't want rather than to the bottom of your library

But, you say, Urza has affinity, he will always cost less

You can use it to punish/prevent your opponent from making comebacks

In the past, we would accomplish this by having to write out that the tokens left alongside the creature that made them

With the addition of some powerful cards or even entire packages, Standard has become a turn-three to turn-four format lately, and this makes it a bit too fast, favoring aggressive decks or decks that can ramp up a lot