Anatheema - I will add more suggested items as soon as I finish recalculating them ;)
As for Mejais - they are exactly the reason why I wrote at the very beginning to AVOID them if you are uncertain you have the edge [not to mention I warned at the second section you WILL be focused if you play well with this way, due to general squishyness of this build. Mejais and oracles [if ever] only add importance ;)

as I've said though - I will add additional items to suggested place :)

btw : Thank you all for your comments, I will try to improve this build basing on them :)

P.S. I think I will add maths beyond the runes, masteries and Mejai's sections later on if this guide catches :)

[As noted - mejais pay for themselves at 6 stacks, all above is just profit. With high range of your skills you should be relatively far from danger most of combat, at least in later part of game]

Note to self : add psychological section of laning phase.

Build shows promise; however, it's really rare that it's worth it to get mejai's. If you get it when your team has a slight edge, or at all, you become target #1. You will be so focused that it's just a waste of gold, even if you stay toward the back of teamfights (like you should be).

Maybe include other items you'd suggest in place? Since you mention "other items."

This guide shows some promise. I think your content is good, but it just needs some polishing to make it look better. I enjoyed the specific advice you gave during the lane phase, particularly. Good job.

Decent enough, i never recommend clarity on her though.