Great guide. I would also go for Ninja Tabi +1 from me.

i like it, been looking around the different builds and this is the first one with atmas!, works great with ren, hes my new main. great build +1. one thing i do different is use exhaust, i find its usefull throughout the entire game instead of getting first blood, so i spec it in masteries instead of 1 in arc savy. havnt yeat been able to get full item build they alway surrender or we crush there nexus. i would post screen shot but i cant figure it out, but so far with ur build ive went positive kdr and won the game, first time was 7/5/5 (with ignite) second time was 6/3/7 with spec'd exhaust, also since i only have the mr/lvl glyphs that is what im using, seems to work well