Haven't Played in Years, Looking to Get Back In

Hi Everyone,

I haven't played LoL in quite a few years, but a caught some of the Worlds action this week and I thought I would give it a shot again.

I stopped playing sometime after the release of Gnar and before the release of Azir, so around 2014.

How much has the game changed? What advise do you have for someone coming back to the game? What does the current meta look like? (I have every champion up until I stopped playing plus Ekko)

Thanks