(Typical) Champion Design Concept

I nearly had an anuerysm typing out that title. This is quite probably the most common fan contribution that Riot gets. But none-the-less, I think it would be cool to see a mechanic like this in the game(I would play the shit out of a champ like this).

So, I know that in the past Riot have built entire Champions around simple concepts. This isn't an idea for a champion, but strictly a mechanic.

The idea is that of a champion who's auto-attacks switch between very little damage, to significant damage in a binary fashion. An example could be X champion's AA animation throws an explosive device which sticks to his target, dealing very minimal(perhaps AP) single target damage. His next subsequent AA animation is of him simply pressing the detonator, after which the (obviously) the device explodes dealing a more... Noticeable amount of AOE damage. Now this would create complications when it comes to switching targets. But nothing that I'd imagine couldn't be worked around. Now this is just an example of the mechanic. Essentially it's just reduction of DPS, but it could make for an interesting and very distinct play-style that I don't currently see in the game.

The remaining abilities, distinctions and specifics regarding X champion, would obviously be speculated surrounding that theme.

If this sound ridiculous, please make me aware of it, so that I can mitigate my foolishness next time. If you like the idea, let it be known!