Now i know that the AP you see isnt very high but the passive that Rabadons Deathcap gives you will increase it near or over 1000. i use runes that give full ability at 18 because in Dominion it is very easy to lvl to 18.

also my skill sequence is a little shaky and i usually just try and get defile up fast as possible because it is the best ability for group battles in dominion. use wall of pain as soon as champion is in range it is very help full.

if you have anything to add to this unfinished build please comment and let me know what worked for you

GUIDE FOR PLAYING KARTHUS IN DOMINION

To play an effective and high kill to death game with points in dominion, the key is to stay near your turrets but chase when necessary. i start by going for the closest turret/capture point if you spawn on the left it is the drill. then i follow up by heading for the windmill, the windmill is the key point in the game. if you capture it (along with the two other points closest to your nexus) you will win no matter what. considering that you hold them.

UNLESS YOU HAVE A TOTAL BAD A** TEAM, DEFEND AFTER CAPTURING THOSE THREE POINTS.

if you try to hold and capture there two remaining points you risk loosing the windmill and thus the game. To win a game of dominion you need at least 3 points to stop your points of decreasing. Now given that it is possible to get four if not all five points to win but the least is only 3 capture points. As karthus is strong points are in defense and "ganks", although i have used him as a effective 100% killer in dominion it is best to start as a defender.