Razor ~ My 2nd fav.

items in order:

2 bracers - for hp, can sell later in the game

agility threads - Fast attack speed, damage, 2 good things go razor considering he's pure damage

maelstrom - needed for mjollnir
Mjollnir - awesome item for razor, his awesome attack speed fused with mjollnir's orb effect is beast.
(i think it was like 20% chance to do a 200 damage chain lightning)

Mkb(monkey king bar) - lots of attack speed, and a 30% to ministun for 100 damage, really nice with your attack speed. the ministun is kinda good to slow . .

Heart - Since your pure damage, u suck at taking damage so get this, good boost in hp and regeneration

Butterfly - nice evasion/attack speed for razor

Buriza - hmm i wonder why you'd get this? If you really wanna know click the spoiler -_-

Spoiler:

Note: never get radiance since you do not need it + better if your tank gets it. If there are no tanks , i'll probably get after threads or mjollnir.

Off topic, but how do you do those spoiler things?

u know all the options u can do like bold, italisized, url? theres one named " others " click that n go to spoiler