With all honesty, "Ham" should be a class. It should be given to champions who's kit is best suitable for "all ins". You see, the Assassin line of champions typically is meant to pick off those who are caught out, those who were weakened during a team fight, etc. But some of these champs typically are played with the mind set of "go ham or go home". For example, Ryan Choi's Rengar is seen as a "glass cannon". And we all know the rule of Rengar is that even if you're low, if you are in your Ult you dive the enemy to pick up a (hopeful) kill.
TLDR: Make "Ham" a class for champions who's kit is high-risk/high-reward or excel at "all in".