This is basically the best/cheapest half of the Even DK Wild deck.

The Genn activation works for you as long as you have only even cards; the opponent cards don't matter. So in the majority of cases, you will get the discounted hero power while the opponent does not.

Based on the handful of games I just played, it seems that DK is pretty popular in this brawl, which means you'll get even more ways to use the extra corpses from the hero power.