[SmG Conan]

Your build, if you're not aiming for tanky should be:

Black Cleaver
Yomungadjd Blade(I don't remmeber how it's spelled)
Berserk Grieves
Trinity Force
Zephyr(if they have extreme cc)/Blade of The Ruined King
Last Whipers/Guardian Angel

Black and yomun something blade, for le armor stack. Berserk, zephyr/blade of the ruined king, yomung something for le att speed. Trinity cause of le damage and long list of help xD. Last item should be determined in game. Last whisper if they are stacking full armor, or Guardian angel if you're being focused hardcore. If you think you need a lil bit of health , Warmog.