R - Neuroshock: "Targeted champion's ping rises by 1000 for 2 seconds."
Could imagine that on some kind of psychic mage/support kind of guy.
The concept is probably unbalancable but I find the idea of it hilarious.
Yasuo creates a wind wall that blocks all incoming projectiles.
Passive: 'You can't kill what's already dead' "Champion doesn't want the enemy team to get kills off him, so he kills himself whenever his health reaches 30%"
I really had to think for a bit, but this is the dumbest concept for a spell I could come up with.
ACTIVE: Blitzcrank fires his right hand in the target direction, pulling the first enemy hit to him, stunning them for 0.5 seconds, and dealing magic damage.
swap hp with the enemies
hashtag terrorblade
Some kinda ability that creates a wall of some sort that blocks skill shots, ranged auto attacks and some targetted skills... but you can walk and attack through it. It'll be on like a 20 second cooldown so it's up once a fight and we'll put it on a hyper-aggressive, hyper-scaling, crazy mobile champ without mana to make sure it's always there to ruin your day and drive you insane.
A support? Naw dawg, it's going on a hyper carry... having a defensive support with a defensive ability that strong would make too much sense. Let's put it on some crazy anime stereotype too so the weeaboos pick him into every game. Yeah... that'll do.
I'm talking about 
of course.
15 second CD, plays the sound of a Sion ult That or plays the effects of a Karthus ult without doing any damage.
Q (Wanna see your enemy burn?): Cast it on an enemy to make him lose 10 LP. If he is at 0 LP, he gets degrated to the next lower division. If he is bronze V 0 LP, then he gets a negative LP value. Cost: 10 Mana Cooldown: 1 Seconds
It wouldn´t affect your LP or the game itself. But you would just spam it and laugh.
Edit: It´s now global and you can cast it by clicking on the champion icon while pressing tab.
Q-InstaKill deal 21312452646 true damage to an enemy champ or monster cd: 3seconds
R: Retreat! Target a minion wave. All minions retreat back to base, causing all minions they encounter while fleeing to join them. Minions resume normal pathing after reaching their allied nexus.
If you want a really crazy ability, you should look no further than this game's past.
Like this: For 7 seconds you gain 140% attack speed, bonus range, and your attacks pierce through enemies and deal 100% true damage.
Poke: Deals 1 true damage to target enemy champion.
Range: Global
This ability has no cooldown.
(just imagine someone mashing Q as hard as humanly possible, lol)
The Dumbest Ability You Can Come Up With?
Intent: Piece of Shit's critical strike chance is doubled, but his critical strikes deal 90% damage, reduced to 75% damage on Steel Tempest. Resolve: Piece of Shit generates 1% of his maximum Flow for every 59 / 52 / 46 units he travels by any means, requiring a total of 5900 / 5200 / 4600 units traveled to obtain maximum Flow. At maximum Flow, the next instance of champion or monster damage against Piece of Shit consumes all of his Flow and shields him for 100 - 510 (based on level) damage for up to 1 second.
R: rebinds all your ingame keys to "alt+f4" macro
Splash
Passive: Basic attacks against this champion have a .5% chance of reflecting damage equal to 99% HP true damage
Active: Targeted champion is silenced for 10 seconds. Attempting to cast spells while silenced increases the duration by 1 second for each cast. Not moving causes the silence to decay 10% faster.
Gargoyle.
Control an ally turret and make it able to move around the map.
Fear the anti-dive!!!
Full potential: makes champ utilize their full potential
examples:
is full size
is his real sassy dragon self
has a real weapon
is
has full access to everything in his laboratory
can ult as often as he does in his cinematic (bruh..)
really sets the world on fire
gets arrested and executed for the crime he was framed for because fuckhimwligbwigbwkg
taps her untapped power
gets his old ult back.... ripperoni
turn off shadows is disabled in the menu
is replaced with nagaka however the hell you spell that shit
has a cigar
has his whole shuriman army
makes a friend
can bite -_-
escapes his bodylike prison and is legit pure energy
really is the wind
Prestidigitation:
This caster makes a sudden flourishing motion with added flair, like a grandiose hand wave that summons random sparks and crackles. Enemies will hopefully get faked out by the maneuver, but it otherwise does nothing.
ITEM PASSIVE: Champion does not die to enemy nexus, instead nexus damage is reflected onto the highest health Tower on the Map.
R: mirror mode The mouse is inverted for the whole enemy team for the duration.
R- You get a heal! Skilshot based heal that heals based on current hp. Heals for 1% for each 1% current. e.g. 1% current hp heals for 1%. Only works on enemies.
Poppy's old ult as a passive. The only one who can hurt you is the last unit you basic attacked, would not switch for 7 seconds or however long Poppys old ult used to last. With this kind of passive you could just attack a minion then do what ever the fuck you wanted to do for the next 7 seconds or so. I want to see somebody beat this lol.
R -- Requiem: Everyone on the map takes a shit ton of magic damage. EVERYONE.
Passive: All basic attacks knock back enemies hit.
Q - Nuclear strike: Range : Global Does 5500 true damage in a 1500 radius, can damage buildings and goes through any immunities or invulnerabilities
Riot starts using the real weight calculations on Poppys hammer for damage on impact.
Or
starts actaully summoning a freaking galaxy
