10 abilities I'd love to see even if they break the game

I know they might be super op and broken and no one really needs it in their games but here are some abilities I thought would be fun:

1. An ability to turn back time, and no I'm not talking about Zilean's chronoshift, I mean literally taking an entire game and going back like 1 minute, even changing the game timer and objectives and whatnot.
2. Reflection of one skill shot. Kinda like a windwall but it can reflect one skill shot back at an enemy in their face and doesn't block all skill shots
3. Ability that teleports a player out of the game into another arena. Like if you teleport the caster with the enemy into like a 1 v 1 lane for 30 seconds outside of summoners rift and they come back at the end of their duel.
4. An ability that cleanses debuffs, not just from mikaels or the cleanse summoner spell. Maybe it reverses the debuff into a buff? Like a 30% slow turns into a 30% speed boost?
5. respawn debuffs/buffs like if a character was killed by the champion, they start off their next life with a small debuff or a temporary state for like 30 seconds. Or maybe an ally sacrifices themselves for a buff to their allies when they die? Or for the next 30 seconds on respawn they get a boost/debuff?
6. Friendly fire debuff, a debuff that allows you to hit your scrub allies!
7. A passive or ability that deals damage based on how many minions/champions an enemy champion has killed, kinda like tonberry from final fantasy
8. A random ability generator like metronome from pokemon! It can either help your allies or the enemy team!
9. Mana/Energy Restoration, no one does that for other allies anymore
10. Debuff/Buff duration extender, like for example after being hit with this ability, the duration of cc or buffs you receive gets extended by 20%