A surprising update in the latest patch: Kassadin not strong enough. To compensate for this, the cooldown of Riftwalk has been reduced to zero. Many consider this to be a nerf however, as it will use up much mana.
This fight between Master Yi and Katarina was one of the main reasons why Riot decided to remove dodge from the Fields of Justice. Many champions simply built 100% dodge chance causing all auto attacks and spells to miss. The only way to get kills after this occurred was to have everyone ignite the same champion.