Check my Dotabuff for the first time since an absurdly drunk night of Dota over the weekend. Find out I apparently played SF four straight times after never doing so before. I guess I go treads/mek/BKB/deso/AC? Seems like a bad build. Need to stop playing Dota like that.
I started playing with him recently, and I think he is quite flexible with his item build, like with everything it really depends on the situation. Phase boots/treads depending on if you need sustainability or more DPS (Although Treads is always the way to go since he is so squishy).
Blink I felt is a must for him , wonderful for initiating fights or to get away from them and this one in conjunction with Eul's can put you in a very advantageous position in teamfights. Shadow blade is a good alternative but easily countered so keep that in mind.
Desolator I also think is the same deal as with boots, either you want damage output or be able to remain in fights as long as possible, if the latter then you go for bkb.
Mek on him didnt tried yet but i don't think is the best idea ever unless you are playing with a well coordinated team and good supporting, since him being a very mana intensive character wouldn't find very useful an item that takes 225 of mana away from him. But what do I know I'm just a #roadto2k scrub player.