Kos is a melee support, mage, pusher, hyper carrier, assassin. He has alista stats.
Kos use Light and dark as the resource bar. Whenever he is respawned it is back to balanced 50/50 ( LLLLLDDDDD). Whenever he loses 1.8% max hp dark bar rises by 1 light bar is reduced by 1. whenever he gains 0.9 % max hp (heal ,regen) light bar get + 1dark -1. at 100 dark or 100 light he gains new skill set and the bar stop funfacting till he die.== Normal Abilities ==
Those are not just straight out skills , they are also about control your light and dark.