@Meddler: Would a Champion with a built-in Spellthief passive be broken?
Spellthief's Edge is a good example of risk/reward in that you get bonus gold when you poke at the enemy or poke turrets. Good for supports like Sona or Nami, who are good harassers.
Now, what if there was a new Champion, say a Thief, whose passive was the following:
#Pickpocket Dealing damage to an enemy Champion or large monster grants X bonus gold. This effect has a Y second cooldown. Additionally, gain Z bonus gold on Champion kill/assist.
Would this be broken on a non-support Champion?