The title says it all. Make a buff which is useless buff to a champion ability.
Karthus gains 1337% movespeed whilst channeling Requiem.
Edit: I made a new one.
Xerath gains 10000% AD while channeling his Ult.
instantly kills anyone he sees
....
....
Get it! He's blind! >.<
Diana gains 500% buff to AD and AP during **night ** time on Summoner's rift.
Gains a permanent +10 bonus to AD every time he uses mana.
is now equipped with google glass.
2 minions will now follow 
to collect milk
gains 500 ap and 3000 mana for every friend he has
is immune to nerfs while in stasis.
Gains +500 movement speed when he channels his drain.
His abilities do 1 trillion more damage when they miss.
's model becomes even sexier when casting charm.
W- Courage
New active: Gains 1000/2000/3000/4000/5000 magic damage for 10 minutes.
gains 1000000 move speed while stunned
gains immunity to all crowd control effects while dashing to a tunnel while using her ult
gets 9999999999999999 Ap while axes are out.
Permanently gains 1 base AD every time anyone plays him.
: Passive damage "crow control" requirements for activation now includes death. (Ie: passive amps his aa damage to any target that is stunned suppressed snared or dead)
Whenever an enemy champion is killed by one of 
's Mushrooms, their death recap is replaced by a picture of Teemo doing a victory dance.
laughs after every kill. Minion, monster, champion or otherwise.
Casting 's W his shadow gains %100000 AP and Movement speed
His bloblets gain 500 AD+ 100% crit chance
gains 9999999 ad while attacking somebody with a soldier
Ult grants allies 200% AD, AP, Attack Speed, Movement Speed, Armor, and MR while untargetable. lol
When you block an ability, you gain 1000 AP.
gains + 69696969696969696969% movement speed while channeling her ultimate
When she has vision of an enemy, but they do not have vision of her, they can still hear her /laugh, but with a linear-over-time stereo pan in a random direction.
gains 500% attack speed while ulting.
Anivia gains 2000 mana once while her ult is active. Still goes oom.
Vel'Cock gains 31415926535% attack damage while channeling ult
Rumble's abilities get 1000% AP bonus damage when cast during overheating.
BTW THESE GAIN AP WHILE SOMETHING WORK WITH NASHORS TOOTH
gains 100% Crit chance and 1000000000% damage scaling on his windwall
