Korkhrim is a good starter Champion but starts to fall off Mid game. Korkhrim needs Potency and his Passive is great to help that but he also has a low health and shield combo. Korkhrim just received t7 and t8 ability upgrades and while they do make him better, they don't address the survivability issues he faces. If you are going to invest in Korkhrim more then just to unlock Solius, the T7 and T8 upgrades are a must. Pair Korkhrim with a good Defender and let him smack!