Learning to farm with...
Midlaners are the usually fantastic at wave-clearing in the late game, and often have the best CS numbers at 20+ minutes, unless the ADCs are doing a really good job. The best style of mid-laner for this high CS number is the waveclear and seige style champions such as Ziggs and, you guessed it, Xerath. These champions have fast and effective waveclear from some serious distance, and in the late game can often clear a wave with one or two spells, while being so far back the enemy has no chance to capitalise on it. However, Xerath has a mildly better laning phase than his closest rival of Ziggs and is far less blue buff dependant thanks to his passive, so I believe he's a little more 'noob-friendly' due to not needing as much mana management skill, so here he is!