Any ideas to up Windrunner's damage?

I like the Desolator suggestion, would really make her a tower wrecking machine as well.
Guess the next step is to up her farm if she's gonna get Orchid Desolator Monkey King Bar ;)

Seriously, thanks for all the suggestions, will give them a try.

If you want to be more of a carry,you could also try lifesteal.But be careful,as it doesn't work with Desolator or any other orb effect.

ty for the tip and the link, i search the forum for a guide not finding it, i just played a fantastic windstyle tonight but i had 1 quitter and 1 feeder... :(((. A lot of suggested guide report also Shiva's Guard but it's a little bit dangerous for the gold to have and 2 secret items, i am choozy bout that

windrunner sure is a fun her to play and she has good carry AND support/utility potential..... since i personally dont have too much experience with her and this is a damage-oriented build, what about an aganims scepter?!

Agh's is good if you're going for the dps/carry build. Works great with deso for ridiculously fast tower kills (think well-farmed Clinkz) Crit or MKB for dps after that.

when I play windrunner as semi carry, i get a Null Talisman and a Ring of Basilius
together with Phase Boots. this is a nice extra damage for early game + some more int and mana regen to spam spells.

after i get those 3 i kinda rush Linken's Sphere (as it gives you incredible survivabilty together with windwalk, also it solves your mana issue)

or i rush an Eye of Skadi wich will also give you alot more mana to cast spells, and some int wich will give you damage.

ALSO the main reason i get Eye of Skadi is that it DOES NOT require scepter to affect your ulti, that's right, Eye of Skadi is active during your ulti WITHOUT scepter

after getting either and Eye or a Sphere (or both :p) i end up with some situationals:
MKB is a very good choice imo
tho force staff is awesome too.

i wouldn't go for too much pure dmg as you are still a support in some ways and are most rendable supporting your team (F.e. slowing the enemies running away with your eye of skadi so that your team can catch up and kill.)

I figure that this is obvious but I guess not. Just pick up a Dagon and you should be fine. Scale the Dagon accordingly.

Phase Boots
Orchid Malevolence
Daedalus
Desolator
Monkey King Bar
Divine Rapier