Token producers have always been some of the most sought-after cards in Magic: The Gathering. While Hero of Precinct One has a very specific ruling when it comes to generating tokens, it isn't hard to see where this card could do wonders.
Again, think of Mardu lists that run a lot of cheap golden creatures, such as Boros Challenger, Fireblade Artist, and Swiftblade Vindicator. Every time you play these cards, a Hero will put one token on the board, and keep doing so until you build up a small army.
Then, you can play Judith, the Scourge Diva and buff all of those tokens with an attack power.