Cho'Gath is an OP champion if played correctly. Using his rupture he easily harasses his enemies what makes them weaker and easy to kill. The fist must be always used even when there's no champion to finish of with it. When you get the feast you must use it as fast as you can on a minion to start the cooldown so you can get 6'th feast fast and easy. Feast is very important as it actually affects his skills and stats.