Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Title?
I personally find mummy very interesting as an ability. A large amount of pokemon in the ou tier are given their high usage rankings in part due to their abilities. While most of these abilities might not be game-breaking, they still act to buff the pokemon. Mummy should be seen as a...