There are currently twelve champions in the game. Only jett has a passive skill which makes her able to slowly descend.
RAZE could make small explosions whenever she jumps down from somewhere.
BREACH can have bonuses to penetrate objects with weapons.
OMEN could provide vision as ghost in his death place.
BRIMSTON could have extra 10 armor points.
PHOENIX could explode upon death.
SAGE she could leave a healing orb upon death.
SOVA could be able to see enemy tracks for 2 sec at longest
VIPER could have a better vision in every smoke or poisonous bullets.
CYPHER could make enemys visible for 0,25s upon hit.
REYNA could recieve extra armor upon clutch time.
KILLJOY could leave a small mine on the ground every 20s.
There is potential to add similiar skills to every champion but Riot Games wont do that if there are not enough people who want it. Would You help me achieve that?