Champ passive Idea

I was just thinking about champion ideas and abilities when I thought of something I think would be interesting and fun to have in the game and would bring something brand new. I thought of a passive for a champion of your choice a champion that's maybe in development that fits the theme of this ability. What the passive does is when the champion dies it turns into a spirit or something like that, and turns invulnerable and hovers over the ground and is unable to move or do any damage so it's like his just there unable to do anything like what happens in a zonyas or a GA so the spirit of the champion will just hover there for maybe a second or two then descends into the ground so until the surface of summoners rift is unable to be seen and he enters a cavern deep under summoners rift with 2 or 3 caves/paths in front of him if he takes the right path he is revived with 25% of his hp back if he takes the wrong path he dies (maybe if u think its op but and extra few seconds on his death timer) or maybe evan put 3 paths one of those paths revives him one of them kills him one of them puts extra time on his death (Just a few seconds) If the summoner fails to go down a path in 4-5 seconds he will die with the extra time on his death so players can't stay there for long. Another thing you could do is make he revive at a random place on the map not just the place he died so he could get lucky and spawn some were good or unlucky and spawn on the fed yas or in the enemy base So that my idea I feel like it would bring something really different and cool into the game and allow players to explore more of summoners rift and it will give players that killed him the excitement and anticipation of waiting to see if his dead or not. and it would be pretty funny for everyone if he chose the wrong path. you could also feel the cavern with a bunch of souls or crystals and make it look super cool. (Paths are changed randomly so you won't know what one is witch)