This is a stand out aggression card, a highlight in any deck capable of including it. There aren't many good aggression attack events, but this one is an exception as long as you are running a “fist” deck that can reliably trigger it. It can even be better than your hero-specific attack events. The only limitation is that you can only stun the villain once per turn, so the more players you have the greater the chance you both want to stun the opponent and end up interfering with each other.