ITT: We create another ability for a champ. I'll go first.
Shen
:
T - Eye of the Twilight: Shen spends all of his remaining energy into channelling the Eye of the Twilight, completely removing the fog of war for his team for 3 seconds. During the duration of the ability, Shen cannot perform any action, and he cannot regenerate energy for 5 seconds after the ability ends.
Fizz
Impale - impales self on pole and dies. Remains dead for the remainder of the game.
I hate Fizz.
More seriously though, Lux
Blinding Flash - Damages and blinds all champions for 1s within x units of Lux.
T - All Eyes on Me / Center of Attention / Crowd Pleaser (something like that, take your pick)
It's a global charm. Even for his teammates.
T - Summon Whirlpool: Nami summons a whirlpool at target location, dealing magic damage to all enemy units hit and slowing them for 1 second. The slow is stronger if they're in the center of the whirlpool.
Damage: Medium | Mana Cost: Medium High | Cooldown: Low Medium
And an ultimate version! T - Mystic Maelstrom: Nami summons a powerful storm at target location for some seconds, dealing constant magic damage to all enemy units and slowing them as long as they're on it. Enemies in the center radius are also snared for 1 second. Damage: Medium High | Mana Cost: Normal | Cooldown: Very High
T - Nyah!
Toggle ability: Transforms your spells to better assist your allies.
No cost
Cooldown: 35
Essence Theft: Now heals the lowest nearby allied champion instead of Ahri.
Orb of Deception -> Will o' the Wisp: Ahri sends out and pulls back her orb, slowing any enemy hit by 10/15/20/25/30% for 1.5 seconds. Champions and large monsters hit by the orb twice are snared for .5 seconds before the slow is applied.
Fox-Fire -> Inari's Cunning: Ahri blesses the target champion for 1 second, allowing them to block the next enemy ability that hits them. If an ability is blocked, Inari's Cunning's mana cost is refunded.
Charm -> Promise: Hitting an ally with Promise grants them 15/20/25/30/35% of Ahri's bonus movement speed while they remain nearby and for 2 seconds after leaving her area of influence. Promise's CD doesn't begin until the ally moves out of range and loses the bonus.
Spirit Rush -> Spirited Away: Grants one ally Grace for 10 seconds. If the ally would take fatal damage, Grace grants them a shield equal to 30% of Ahri's total health, and dashes them towards Ahri up to 1200 units away. If used on herself, Ahri gains 2 charges of Spirit Rush that does no damage but has no CD between casts, and heals Ahri for 10% each dash.
T - There's More Where That Came From
Mana Cost: 45
Cooldown: None
Channeled Ability
Every time you get a killing blow with Parrrley or a champion kill/assist you gain 1 stack of Spare Ammunition, up to 4/5/6/7/8 stacks.
When you activate There's More Where That Came From Gangplank begins pulling flintlock pistols from his holsters one after the other and firing at the nearest enemy (prioritizing champions) until he runs out of Spare Ammunition.
Gangplank can move while channeling this ability, and can cancel by activating the ability again. Activating another ability or using an Active Item or Summoner Spell interrupts the channel as well.
TMWTCF can not crit or apply on hit effects other than Grog-Soaked Blade.
Deals 20/25/30/35/40 (+30% Attack Damage) Physical Damage
Teemo
T - Armageddon
The entire map explodes, filling the map with poison dealing 100% of the affected player's health in damage to everyone in the map, even teammates, people using Zhonya, Fizzes on Trollpoles, and Vampires in Blood Pool, and Teemo himself. After the fog lifts 60 seconds later, Teemo will be deleted from the game and everyone respawns inside the Magma Chamber with URF abilities.
Cooldown: None Mana Cost: 6000 mana (6 Seraph Embraces) and Teemo's soul.
T: Udyr unleashes his most destructive primal spirit. His dragon spirit. For 5 seconds Udyr is granted no cost to shoot fire at opponents from range. After the 5 seconds are up it costs 4/5/6/7/8 mana per fire shot. Every 4th fire shot, the opponent is slown for 1 second.
#Ashe
T - Perceptive Strike
Ashe ceases moving and charges up the torque of her next shot.
For a maximum of (2/2.5/3/3.5/4) seconds, Ashe may build up the torque of her Perceptive Strike. As the shot charges, the chance of Perceptive Strike dealing critical damage increases by (15%/20%/25%/25%/35%).
If Perceptive Strike hits a Champion, Ashe gains 10% increased movement speed for (1.5/1.5/2/2/3) seconds. If she does not hit an enemy Champion, Ashe resumes normal movement. If Perceptive Strike is cancelled, half of the mana cost is refunded.
Note: If Perceptive Strike deals critical damage while Focus is set to proc, the critical damage of Perceptive Strike is stacked on top of Focus.
**Design of ** Perceptive Strike
ABILITY TYPE
Perceptive Strike is a skillshot, with a target indicator in the style of Caitlyn's Q.
CANCELLING
Ashe can cancel her ability in one of two ways: 1. She may fire the shot at any time, or 2. Use the duration of her ability without firing. As noted above, if Perceptive Strike is cancelled then half of the mana cost is refunded.
CRITICAL BUILD-UP
The chance for Perspective Strike to deal a critical strike increases as the torque is charged. If released early, crit chance will be equal to the maximum potential crit chance multiplied by the percentage of the charge filled.
MOVEMENT
Ashe is unable to move while the ability is in use.
VISUAL
White light slowly emanates from Ashe's bow as the ability is built up. The duration will scale with ability scaling. Upon maximum torque, the light will flash a tinge of blue.
AUDIO
A ping similar to the ready of Focus will trigger. Perhaps just a modified version of that sound.
T: manly Radiance
Taric blazes with manly radiance stunning all those around him in awe of his glorious visage.
Mordekaiser.
T: Mind Over Metal - Mordekaiser detonates his shield dealing damage equal to it's strength to everyone around him.
T - Sniper Precision: Passive - Caitlyn's basic attacks and Ace in the Hole ignore a % of enemy champions' bonus armor.
T - Fortitude: As Quinn Active - Quinn heals HP and gains bonus Armor and Magic Resistance.
As Valor Passive - Valor takes reduced damage and the duration of crowd control is decreased.
T - Waltz of Invigoration: Active - The allied champion within 1000 range with the lowest current mana is restored an amount.
Passive - Allied champions within 1000 range have increased CDR.
Power Chord: Fortissimo - If Waltz of Invigoration is being played, Power Chord silences the target.
Rising Dragon: Shyvana knocks her foe upward with a powerful backflip or uppercut. Cooldown: 13 seconds Damage: 50/100/150/200/250 (50% AD)
I would give Lucian's old E to Udyr.
Where is your god now, Ashe?
T - notice me senpai
poppy rushes into the field killing every enemy champ and taking all the turrets and nexus so people will notice her.
does not abide to ( baron von jiggly ) for he already loves her
Janna
T - Fury of the Winds (ultimate)
Draws all enemy champions within 725 units to Janna's location, dealing moderate damage.
Leona
T - Horizon's Glare (basic ability)
Leona swirls her blade around herself, dealing moderate damage and blinding all enemies within X units.
Varus
T - Force of Pain (basic ability)
Fires a cone of arrows in a target direction, knocking back all enemies.
Vayne
T - Shadows of Night (basic ability)
Vayne momentarily gains +25 range for her basic attacks and Condemn.
Morgana
Morgana is unable to cast her Q, E or R. Fuck Morgana and her Q's hitbox.
Riven 
:
T - Ki Pull (idk, couldn't think of anything, so ripping off her W) : Pulls in all enemies in a large radius (think vlad's Q range) towards riven for 3/4 the radius. does no damage, high cooldown
Instantly shroom, poison, blind, and troll all players on the map.
T - Central Command: Blitzcrank now controls the keyboards of all enemy team members, causing them to complain about how hard it is to play against Blitzcrank and how OP he is.
W: Scorn of Pallas (overlaps with Blighted Quiver)
Toggle: Varus' other abilities have bonus effects depending on the number of Blight stacks they detonate on a target. However, while this ability is active, his other abilities cost 15/11/7/3/0% more mana.
Piercing Arrow: Damage increases by .35% per detonated Blight stack for every 1% of the target's missing health. Hail of Arrows: The target takes 10/15/20/25/30 (+20% bonus AD) physical damage per second for 1 second per detonated Blight stack. Chain of Corruption: The target is stunned for .25 seconds and the corruption spreads 15% faster. Each effect increases per detonated Blight stack.
No cost Cooldown: 0.5 seconds
T: Avalanche Press
Active: Braum lunges at a target enemy, stopping at the first enemy he hits and knocking all enemies in the impact zone back. He applies one stack of Concussive Blows to each enemy champion hit.
Damage: 60/100/140/180/220 (+2.5% of max health) Impact zone radius: 175 Range: 600 Cost: 50/55/60/65/70 mana Cooldown: 16/15/14/13/12 seconds
: Command:Shred - The ball travels to a friendly chamion. The ball then starts to heat up making the holder of the balls' auto attacks deal an extra 5/10/15/20/25 magic damage on hit and also shreds 1% of the enemy's armor and magic resist. The armor/magic resist shred stacks up to 3 times and can only be active on one target at a time. During this time, Orianna's passive stops working.
T- Redemption: Yasuo's vengeance fuels him for a total of 3/5/7 seconds, enabling him to ignore incoming CC effects while Redemption is active. He is also able to cast Last Breath instantly on a target enemy champion while Redemption is active. (Last Breath's effects still apply.)
(Cooldown: 160/120/100 - No Cost)
Blood Well Blast: Uses all of the blood Aatrox has stored up in his passive and catapults it out to a max range of 1150 units to deal 110% magic damage equal to the amount of blood used +5% of Aatrox's attack damage dealt as physical damage.
Cost: All of the blood Aatrox has stored. Cool down: 25 seconds
** Refraction:** Makes Lux invisible for 3 seconds, gives her a 5% speed boost for 2 seconds, and passively reduces all types of damage she takes by 5% of her ability power.
Cost: 75 Mana Cool down: 15 seconds
** Hammer Trick / Cannon Trick: **
In cannon mode: Jayce will be launched forward 380 units and can knock allies away from danger to his target destination. However, Jayce dos not require a nearby ally to cast. If Jayce jumps through an acceleration gate, he will jump 430 units and deal 50% of his attack damage to enemies upon collision. Jayce can collide with multiple enemies with or without an acceleration assist, but will pass through them and not carry them along his path. He can only deal the additional 50% attack damage with an acceleration assist.
Cost: 55 Mana Cool down: 12 seconds
In hammer mode: Jayce can smack away all slow moving projectiles back towards their source including tower shots. All reflected shots would deal only 15% of their original damage and would not produce any crowd control effects such as a deflected Morgana dark binding. Reflected shots can be dodged by the original caster.
Cost: 55 Mana Cool down: 12 seconds Range: 250 Units
Targon's Calling: Leona throws out a ball of light that deals 85% damage of her ability power to targeted enemies, and heals targeted allies for 85% of her ability power and instantly reverses her location with the selected target.
Cost: 60 Mana Cool down: 20 seconds Range: 620 Units
Freljord's Lawn: Causes the area around Ashe to freeze over, causing enemy champions to move as if they were on ice, making it harder for them to change direction. Enemy champions will also have 18% reduced movement speed and take 5% more damage from non critical attacks.
Cost: 60 Mana Cool Down: 20 seconds Range: 400 units in a circle around ashe
T - Banana Hammock :: sets out a yellow banana hammock for the fed ADC nap on to gain a super status boost from that doubles their attack speed and attack damage for 3 minutes.
T - Misfortunes Misfortune :: Enrages MF, sending her into a frenzy that causes her R to shoot in all directions randomly.
//Sarcasm
Immovable Object: Malphite becomes temporarily(1/1.5/2/2.5 secs) immune to all CC, including pulls, knock ups and suppression and takes 25% reduced magical damage. However, he cannot move or attack nor receive any healing during this time.
R: Hyper Ventilated Death Hook
Shoots a hook in a direction that hooks the first champion it hits pulling the champion half-way to you (My take on his ult here)
Cooldown 150/125/100
T: Obliteration Pulse Shoots a pulse of poison in a direction (Skill shot) Dealing 500 Free Damage (50% AP) And stacks onto his passive for dealing 10% Armor Shread for 0.5/0.75/1/1/1.25 and regenerate's itself after three seconds Cooldown 19/18/15/14/10
T - Passive Malzahar's voidlings now have AP ratios on their health and attack damage.
Go forth, brave Miggles, and DESTROY THEM! BWAHAHAHAHAHAHAAHAHAHAHAHA!
Teemo R : Toxic Mushroom brcause you know, Innate is an ability too...
If you meant a 6th ability,
Gangplank T - Finger-licking good : Disables the passive, but add X damage and X tenacity for X seconds.
Game will be severly unbalanced. and alot of nerfbats will go around. forums will blow up with people complaining and crying for a mega nerf on so many champs. and riot will lose money because people will protest and not buy any skins till they fix the champions.
T- No rest for the weak: Talon gains a burst of speed giving him 50% movement speed and immune to all cc's for 10 seconds, during that time his attack speed is increased by 25%, if shadow assault is cast during this ability talon loses the attack speed buff but still keeps the movement speed buff
good for a quicker kill and escape
T: Night Terror - Nocturne haunts an enemy champion, attaching himself to the enemy champion and dealing 500 (+0.5 AD) damage over 3 seconds whilst being untargetable.
- Overclock: Temporarily disables CD on Heimer. Turrets still place up to 3, but no longer require ammo to spawn. Once duration is over, double CD is applied to all spells, and the ammo count is set to 0. Heimer will take twice as long to regain his next 3 turret ammo.
I'd like to call this Renewal, but she already has an ability with that name :/
Reduces all CDs on an ally (cannot be cast on herself) to zero. Item actives and summoner spells too.
Cooldown is equal to the total amount of cooldown time that was reduced, multiplied by the number of abilities/items/spells that were affected.
While on cooldown, Karma looses her passive cooldown reduction on her ultimate.
If Mantra is used to empower this ability, it also affects Karma. But keep in mind that it will then have a much longer cooldown.
Gnar
T - Cuteness Overload: Gnar spends all rage to instantly deal damage and stun enemies in a cone due to cuteness overload. The ability does damage that is almost half of your max hp, but after using the ability, Gnar deals 50% less damage to enemies affected by Cuteness Overload for 5 seconds.
Annie
T - Tabbah: Annie will run to an enemy and ask them "Have you seen my bear Tibbers?" and on second use, she instead says "Have you seen mah bah tabbah" and become stupid looking.
T: Rally Cry
Garen jumps to a targeted ally unit and gains attack damage and armor penetration for 3 seconds. If there are any ally champions where he lands, they too gain these buffs unless their ability power is higher than their attack damage. In which case, they gain increased ability power and magic penetration instead. He can use this ability while channeling his other abilities but cannot target himself with it.
Bonus Attack Damage or Ability Power: 15/20/25/30/35 (+20% bonus AD) Bonus Armor or Magic Penetration: 10/13/16/19/22 (+10% bonus health) Range: 400 Radius: 200 Cooldown: 14 seconds
T - Billowing Roar: Active - Shyvana let's out a loud cry, slowing every enemy unit in one direction and shredding a flat amount of armor and magic resistance for a long duration.
Dragon Form: Shyvana's terrifying scream instills fear in every foe in an increased radius of 360 degrees and shreds their armor and magic resistance by twice the amount.
T - Keen Eye: Toggle Passive - Ashe's basic attacks and Volley gain increased range and her critical strikes deal bonus physical damage based on her target's max HP at the cost of mana per-attack.
T - Advance Intelligence: Passive - Teemo continues to track the movements of enemies he sees for a time after they leave vision range. This includes wards and mushrooms he has placed.
Stepping on a mushroom will debuff every unit affected for several minutes, debuffed targets will suffer slightly increased damage from enemy sources. Stepping on another mushroom while debuffed will add an additional stack and reset the duration.
TGPA Lotus8/20/2014, 4:40:40 PM{{Champion:115}}
T - Sticky Bomb
Ziggs targets an area on the ground. For 3/4/4.5/5/5.5/ seconds, enemy champions who walk through the area are planted with a sticky bomb. The sticky bomb with stick to the target(ed) champion(s) for 6 seconds. After 6 seconds, the bomb detonates, and will split into 2, sticking to any enemy, and exploding after 6 seconds. This spell deals 30% reduced damage to minions.
It will also apply a small slow, and deal pretty weak damage, with high scaling.
Slow % - 5/10/15/20/25% Damage (per bomb, each split bomb deals 40% less damage than the last) - 20/45/90/150/180 65% Of AP
