Merge champion together

Umm, I would like to introduce our fellow lol player to a new game mode I am thinking of, though it could not be good but I just want to share it with all of you. 2 teemo so u won't get bore reading this long post

So this game mode all just a 5v5 match where player fighting normally and the special thing about this mode is that a summoner may merge into another summoner champion, and gain all the stat that the recessive have and of course one would be dominant and another would be recessive. The recessive champion would be inside the dominant one and after a certain amount of time, the recessive champion would come out of the dominant. But i would like to add some side effect to the dominant one. After the recessive champion came out just like kalista ult, the dominant one would be exhaust. Player can merge in at some specific places, just like getting buff at twisted treeline and time to merge could be the same as the amount of time to get the altar. And if the merging is interrupt then it must redo just like recall and if the dominant champion health is lower than 300 or 30% then the recessive can choose to stay or to get out like kalista ult and if they choose to stay then after the dominant champion die the recessive would die along them too and enemy get a double kill for that. SORRY FOR THE LONG POST,** I know this is not perfect but pls help to improve this.**