Thanks for the input. I've adjusted my section on "playstyle" a little bit to better describe how you can better manage mana and why this build works if you play that way. Mana is a problem early game, but usually by mid-game you've gotten all your heavy hitting items and because you'll be helping gank and picking up lots of assists/kills you'll have plenty of gold to build that RoA relatively quickly for end game survivability and mana for the 'longer' team fights and big battles! Early on with ganks here and there - as long as you conserve your mana you can stay in lane all day. Just have to save your mana for when a DPS stops by to gank someone.

Agree with above. Usually the standard ap build is 3 dorans+cap OR rush an roa. The dorans give enough mana regen and hp to keep you in lane. Or you can have amazing sustain with a catalyst->roa and less dmg. Rushing an roa is also good vs a really bursty champ.

Nice Guide so far. Id advise you to give some alternative perspectives for runes, items and masteries or explain, why you will rush smth instead of building smth else before that. For example why do you rush rabadons deathcap instead of building a catalyst and then rabadons. Allright you hit like a truck. But as far as im used to morg, she runs out of mana very fast and rly needs some life and mana, before building ap. But thats just my opinion