Moon approved: This best guide!
This short guide. Only for summoners who know how to play. No more info. Just the op built.

Look runes. You can go other runes. Moon fine with these runes he said.

Best masteries. GP10 op. Ability Power and defensive stats. All you need as Jungle Moon Warrior Girl.

You deal a lot of damage without ap items. You need be tanky and stick to ad carry / ap carry in team fights. With deathfire, Ult, and all other abilities ad/ap carry fast down, even with little ap. You have max cd and can spam abilities like change of day and night. You still alive after all team fights. Moonlight upon you.

Not quite sure about skillsequence. But moon shines brighter with lvl2 gank after blue and moon fall is pretty great moon drop **** to gank top or bot lane.

Smite obvious. But you need to get ad carry or ap carry down, that's why you need exhaust to stick at them like a shiny moon butterfly.

This won me my first game played as Diana and it was ranked:

26/4/22

Just op built. Glass-cannons suck on Diana. And moon will punish you, when you use it.