Spellvamp
Why did Riot get rid of spellvamp? Right, we now have the 15% dealt damage heal, but most of the time it's redused to 1/3.
Shouldn't spellvamp be for mages the same thing lifesteal is for adc and fighters? They can also heal form crits now, so it's kind of unfair.
How adc can heal?

+ heals form crits
How mages can heal?

- most of the time heal is reduced to 1/3