I see a connection here...

http://vignette2.wikia.nocookie.net/leagueoflegends/images/2/2b/Tear_of_the_Goddess_item.png/revision/latest?cb=20130319091548

Tear of the Goddess is League's Geico Insurance.

Geico saves you 15% on car insurance...

Tear of the Goddess's passive refunds 15% of your mana spent...

So technically, you save 15% of the mana you spend, just like Geico when it comes to car insurance.

https://media3.giphy.com/media/5O3k4fxKARpVS/200.gif