New Keystone Ideas

How about a Keystone that changes during how the long the game goes. Basically Unsealed Spellbook but instead of Summoner Spells it's stat bonuses or new effects.

How about a Kleptomancy but instead of giving items or elixirs or potions, it gives random bonuses on the next auto attack. Like a slow or magic damage or more physical damage.

A more useful Hail of Blades

I know the first two are a bit broken and will cause a lot of bugs, but these ideas were made for feedback to see if they can be changed so it might look like an idea Riot might add.