Is AD 
viable?
Her AP ratios are bad but her Q's have percentage damage. Also, she has good base damages and a skill near LS (Skittering Frenzy).
AD/AS will make her Spiderlings a big threat and her ranged human form AA's (She has bonus AA magic damage on her spider form.).
Maybe hybrid 
? What's your thoughts?
Zarkkast2 votesIt could be a fun build, like AD Malzahar. I'll give this a try.
MrBuffington1 votesMost people build Elise pretty much like a tank, since her mana costs are pretty high, like you said her base damages are good, and she typically only stays in human form to get a rotation of spells off; not continuously deal damage from range. I know Nightblue3 and some other junglers would start Doran's Blade on Elise (this was prior to the changes to Elise, though, he now starts machete + ward + pot and builds Spectral Wraith), since she could sustain pretty well in jungle with only 1-2 pots (since spiderlings can tank for her), and Doran's Blade would give her a lot of early game damage. If you build tank and magic pen, Elise typically does enough damage; I don't know if AD Elise would be completely viable, you could probably play it, but it might not be optimal. Compared to Nidalee, AD doesn't do as much for Elise (sure, they both have AS buffs, but Nidalee can use her's at range, plus Nidalee has that massive AD ratio on Takedown). Compared to Evelynn, who now typically builds Elder Lizard, again Elise has no AD ratios, and doesn't make as good use of the AD as Evelynn does. If I was playing AD Elise, I would rather take BotRK/Trinity Force, and build tank so she can make use of her spider form without getting blown up. Again, you can probably play it, but I think there are better options.
Jinxed Amulet1 votesYeah what this guy said. Not sure if it'd be as viable as her standard build now. I could see BotRk/Tri-force (I mean come on, who doesn't build one of these items these days) but other than that don't really see it happening. I might try building those two items on her and see how I fair. Maybe not triforce since I'm not a huge fan of it but definitely BotRk.
exiledFromBadmen1 votesIsn't it the hardest question? :( I meant hybrid, because she has no AD ratio
Ok, thank you. I'll give a try. With 
/
/
Note: I build 
as an AD assasin. 
/
12tales1 votesAD runes are viable on Elise. Her lack of AD ratios and steroids in her ranged form make actually building AD pretty lack luster, though.
67chrome1 votesReally depends on what you mean by "AD".
Elise is a lot like Mundo, Darius, Nasus, Warwick, and Udyr though. She gets a ton of free damage in her kit that makes her hurt regardless of what she builds, but all that damage has pretty crappy scaling, causing damage items to have a fairly difficult time in actually ramping that damage up. Especially when you consider you're trading off being 2, 3, 4 times as tanky to deal slightly more damage. As she is now, building full-tank will often allow you to survive long enough to do 2, 3, 4 times the damage otherwise, where building glass cannon you get maybe twice the damage but you die 2, 3, 4 times as fast.
From testing her out on PBE I wasn't a huge fan of AD on her. You could do things, but in a pretty sub-optimal manner. She has no AD burst so it's all about sticking to someone and auto-attacking them to death, which is basically where Tryndamere and AD Sion are. To make matters worse - her AP scaling on spiders actually causes very little AA damage to even be gained compared to an AP heavy build, which, while it provides less AA damage, moves you more into a Lucian/Ezreal/Akali spot where you wombo someone than finish them off with AA's. Your auto-attacks don't need to be Tryndamere status if you half-health someone prior to using them.
Hybrid builds are even worse, at least if you mean the Gunblade + Rageblade kind of hybrid. Attack and Magic stats simply don't scale one-another - so it comes down to an end game of 2 x 2 x 2 x 2 = 16 vs. (2 x 2) + (2 x 2) = 8 In regards to pretty much every hybrid build. You need to have something like Kayle or Jax's AP ratios that actually scale with attack speed, for that to really even work in the first place. And even then - running with 1 major hybrid item and then pursuing an otherwise committed Attack or Magic build is a better idea than going full hybrid.
If you did a Darius/Garen/Jarvin IV status "AD" build - you're probably not hurting yourself to much, grabbing something like Kingblade and then moving into full tank to take advantage of the %AS steroid Elise has. Not awful.
If you want to go damage-heavy on Elise I'd recommend AP though, and just go Nidalee status with those homing spider bombs. That's actually pretty fun and can work.
TLDR - I'd say not viable, not in the way 'viable' is used by the LoL community at any rate.