Moonlight with Morgana, This is my first build but I have done some pretty amazing things with this build. I have to say that she is more of a tanky build in some sense. Yes you will do quite a bit of damage and have the ability to solo most any champ but due to the way she plays you will have more assist than anything. If you are ok with racking up assist then by all means Build her this way.

You have speed to get around, you have enough health to survive some damage. You have enough power to scare any adc off and you can, if done right, melt who you want.

Early game mid you want to stay behind your minions of course and use her Tormented Soil when the minions are about half health. You can poke fairly well with Dark binding if the enemy is playing aggressive. Once you have the Athene's and your boots you can become a little more aggressive.

Beware, the better you do mid, the more often they will try to gank you. So try not to go too far over the halfway point mid lane. So in saying that, save your Shield and Skill shot (Dark binding) For an escape mechanism.

Once you get your ult, you should call for assistance in destroying the mid turret. push your mid lane opponent back will not be much of a problem or just killing them. The Dark binding is a very important tool with morgana, It is your gateway attack.

So in the open fight. Have them follow you and fire the skill shot back at them, use Tormented Soil immediately after rooting them and circle with your ult. Stay close enough so it will finish and stun the enemy and follow up with another Skill shot and tormented soil.

In team fights with Morgana, you can lead the charge with the Skill shot followed by Tormented soil then drop back and support your team for easy kills. If the enemy jump you in the process of initiating the fight, Retreat with your ult and Shield, behind your team, Fire Skill shot and Tormented soil.

Morgana's basic attack is useless so run and gun is your friend, You have sustain in team fights with the Spell vamp so sit back and rack assist.