
Is Arkham Horror not a game you actively enjoy playing? Roped in by a friend or family member, do you just wish that your turn would end faster? Well, call me Bob Jenkins, because FFG has the deal for you!
With Sledgehammer (4), you can make sure your turn is over and done with in minimal time. Spend every iota of your effort and all of your actions crushing that Swarm of Rats into nothing but juicy red pulp, and leave the actual minutiae of doing something so base as looking for clues or discovering locations to the other members of your team.
Sledgehammer (4) -- It's better than just watching.
(As an aside, I'm eternally amused that upgrading to Sledgehammer (4) adds five pounds of weight to the head of the hammer. Lol!)