Let randoness dominate us [2 game modes suggestions]

It's a game mode based on howling abyss, same old random champion select. Basically you start with all 4 skills at level 4. Each time you want to use a skill, you will randomly use another skill. For example, you want to use your W with blitz? Well, you will instead use your Q (obviously this won't work everytime in this way, because, you know... It's random!). For champs who need a particular situation for their skill to be available (yasuo's r), the randomizer of skills won't choose r in any case (if you are lucky you can still get your r in the right moment as yasuo ;) ). There is actually one problem, and we are talking about cooldowns. To fix this, we should put a 5 seconds cooldown for all skills. Another type of game would be like a roulette of skills where you can get randomly a skill among a prefixed list of skills for the match (all skills are replaced with a "?"). You can cast your random skill every 6 seconds (from the end of the last skill you casted). Once you use your randomizer, a skill will be chosen and will be available to you to be used in 5 seconds (after this, your skill will be deleted and you will be redirected to cooldown phase). But lets add some fun to this, not only you have a chance to get a skill (if you are lucky you could get fiddle's r while you are playing as teemo maybe), but you'll have a chance to place on yourself a zilean bomb that will explode in 5 seconds and will instakill you (passing through any skill protection and anything like that) and killing everyone around you (enemies and allies!) for a nice run for the pentakill. The main intent i want to bring to riot is to put a game where you cast a random skill, i hope you all will appreciate both or one of these ideas. Thanks for your attention :)

Ps: i may have accidentally created this same discussion in balance and gameplay section due to my poir connection. Sorry. Also i forgot m in randomness in the op :'D