Make one champion beyond broken by changing one "word" from any ability you wish
Hemorrhage: Darius's basic attacks and damaging abilities cause enemies to bleed for 10 - 27 (based on level) (+ 30% bonus AD) physical True damage over 5 seconds , stacking up to 5 times for a maximum of「500% damage 」over the duration.
OR
Hemorrhage does not apply spell effects.
Post some of your ideas and please, change one word.
RULES: You can't use "minutes" or anything like that. Can NOT change a number. It seems op to just change the amount of duration or increase the scaling.

While Q - Siphoning Strike is active, enemy units killed from an on-hit beyond the first unit hit do
Nunu commands his yeti, Willump, to take a bite out of the target enemy
Each subsequent Riftwalk within 15 seconds
Upon taking fatal damage, Sion briefly becomes untargetable then enters a frenzy, restoring himself to 100% of his maximum health but
Whenever Veigar 
W: Vladimir sinks into a pool of blood, gaining 37.5% bonus movement speed which decays exponentially for 1 second and becoming untargetable for 2 Minutes (actual: seconds). Enemies who stand upon the pool are Slow icon slowed by 40% and dealt magic damage every half second, while Vladimir heals himself for 15% of the damage done.
While Thick Skin is not on cooldown, and after taking no damage for 2.5 seconds, Tahm Kench rapidly heals for a portion of his Grey Health over time, 

PASSIVE: Vayne's basic attacks and abilities mark her target with Silver Bolts for 3 seconds, stacking up to
R: Zyra summons a twisted thicket in a target location, dealing damage to enemies as it expands and knocking them up as it contracts.
Spinning Axe: Draven's next attack will deal bonus physical damage. This axe will ricochet off the target high up into the air.
If Draven catches it, he automatically readies another Spinning Axe. Draven can have
ACTIVE: Karthus channels for 3 seconds and, upon completing the channel, deals
Toxic Shot
Toxic Shot
PASSIVE: Teemo's basic attacks deal bonus magic damage and Stun his target, causing them to take additional magic damage over 4 seconds. Subsequent attacks refresh the poison's duration.
POWER CHORD: After casting