Ivern clear times are super slow!!!
Played him in PBE and was always 3 levels behind. His passive takes 40 seconds to clear a single wraith camp and it costs health. The lower your health the higher the cooldown of the passive to try and take another camp ,which means if someone damages you you are screwed. If you are 25% health you need to wait 100 seconds to take another jungle camp or go back to base, for the health and cooldown to reset. Ridiculous.
Essentially anyone that counter jungle's you will remove you from the game.