I'll be honest, I've seen hella lot of AD nidalees recently, and less and less AP (Only seeing AP Nidalee's in tournaments nowadays)
What makes AD Nidalee so strong? Her only scaling AD ability late game is her Q, and she has hella short attack range.
I've found myself running AD Runes (ArP Runes/Quints, Flat armor Seals, Scaling MR Glyphs) yet going for an AP build, getting Rod of Ages/Deathcap/Void Staff/Lich bane.
I do however see people going Wriggles/Atmogs/Guinsoo's. So the question is, why? And how much more viable is to compared to AP?