Skillbuild: 2 1 1 2 1 2 1 2 ulti, aura/stats, ulti, stats/aura all the way and ulti lvl 16.
Itembuilds:
Start items: Normal stats items and reg.
Core: Bottle for rune control. (ALWAYS MID, or dont pick Nevermore). farm up til threads (travel if good farm), but I prefer buying a dagger instead ^^ BKB right after dagger. There are 97% you HAVE to buy bkb. Those 3% happen when enemies dont have any form for stun.
Luxury: Old school style: Desolator and butterfly.
New school style: S&Y, then split it for eye of skadi and manta. Then a DPS item. (butterfly, crit, monkey king bar etc.)
PS: At lvl 7. You can clean a creep wave using 1. spell X-range and C-range if I remember correctly. However, this works til 30min-ish. Farm well ^^