Hello guys, I'm GoogleIsYourFrie also know as Eoy. I'm currently playing on EU WEST server.
I did the best I could to make this guide so you guys could understand that xerath can be a very good support although he is not often very much played which might even help since people aren't used to play against him. You will get more and more used to xerath as much as you try it.

NOTE: This guide was previously published in my old account rawrpt but since I had to change accounts i transfered to this one

You can eventually watch me play at: https://www.twitch.tv/eoygaming

is probably the best option taken in xerath support so that you can make the play with your E. Also it is very good to help you run or even to catch the kill . However I often prefeer to take since it can help you save your adc and or even let him chase for a kill. It's a matter of taste but ye, pick the one you feel more confortable with

Magic penetration marks

They are needed to help you amplify your damage.

Seals - 8 Health


Since you will be focused a lot, it's very good to have your stats maximized in early game so it will help you sustain when trading. The more health you have, better are the chances of surviving and avoiding to get bursted by the adc or other agressive support.

Glyphs - Ability Power


As refered before, xerath is a very agressive support so you will need the max AP you can get to damage your oponents.

Quintessences - 1x Ability Power , 2x Armor


Having 2x insted of going full AP will increase your chances of survival and allow you to be more agressive and sustain some trades.

You want to go for thunderlords to get a very good burst damage. Also the fresh blood will give you an additional 10+1 damage which will work with your poke auto-attacks to get gold and replenish your mana (xerath's passive). Thunderlords will work with your E (stun) - W (slow) and Q combo. Precision will also increase your Magic Penetration.